Potassium permanganate is a strong oxidant commonly used in redox titrations.Which is(are)TRUE for permanganates titration chemistry? The reaction is done with potassium manganate(VII) solution and hydrogen peroxide solution acidified with dilute sulphuric acid. Cloud of steam and oxygen splash into air! 2 MnO 4-(aq) + 5 H 2 O 2 (aq) + 6 H + (aq) 2 Mn 2+ (aq) + 5 O 2 (g) + 8 H 2 O(l) It might be interesting to see what happens when this reaction occurs in a basic solution. … Nov 26, 2016 - Chemical experiments - reaction between Hydrogen Peroxide and Potassium Permanganate. Simply add a spoonful of Permanganate crystal to the beaker. ... Is it necessary to the know the exact volume of potassium permanganate solution added to the flask? Measure 1.00 mL of hydrogen peroxide and put it in the Erlenmeyer flask. 2 MnO 4-(aq) + 5 H 2 O 2 (aq) + 6 H + (aq) 2 Mn 2+ (aq) + 5 O 2 (g) + 8 H 2 O(l) It might be interesting to see what happens when this reaction occurs in a basic solution. Can an Airline board you at departure but refuse boarding for a connecting flight with the same airline and on the same ticket? What Happen If You Mix Hydrogen Peroxide… Why do we use approximate in the present and estimated in the past? The measureized potassium permanganate key is reasond to titrate the milk-and-inspire and acidified hydrogen peroxide. potassium iodide, permanganate ions act as an oxidising agent. Titration of 50.00 mL of 0.0521 M sodium oxalate, Na2C2O4, required 38.71 mL of a potassium permanganate solution: 5 C2O42- + 2MnO4- + 16H+ = 2Mn2+ + 10 CO2 + 8H2O Calculate the molarity of the potassium permanganate solution. Should I correct the answer or just leave it so that people can see why it is wrong? Fill the buret with potassium permanganate to the zero mark. Book, possibly titled: "Of Tea Cups and Wizards, Dragons"....can’t remember. Hydrogen peroxide can behave as a reducing agent in both acidic and basic mediums. 2. (where permanganate solution is added to the hydrogen peroxide solution) I set my peroxide solution of 10% concentration and got a rough titre of around 12.5mL. Potassium permanganate (KMnO 4) is one of the most important oxidants, which plays important roles in many fields.Here, we found that KMnO 4 could directly induce the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to generate an oxidized product with a color change. AP Chem. Potassium permanent hydrogen peroxide and sulfuric acid (kmno4 h2o2 h2so4) are accessible in nearly all chemical laboratories around the world. Thanks for contributing an answer to Chemistry Stack Exchange! In this classic demonstration, from the Royal Society of Chemistry, potassium permanganate is sprinkled onto a burning solution of hydrogen peroxide and ethanol. Titrate with permanganate solution until a faint pink color persists for 30 seconds. Hydrogen … Electroanalysis 2011 , 23 (8) , 1821-1829. Once the peroxide is neutralised you will see a permanent pink in your flask. is 2.1 V, as compared to 1.8 V for hydrogen peroxide (H2O2). This reaction is used for the determination of hydrogen peroxide concentration. Sulfuric acid, sodium sulfite and hydrogen peroxide (30%) were purchased from VWR. To balance the redox reaction, we use the ion-electron technique. Redox titrations involve oxidation-reduction reactions. When all of the hydrogen peroxide has been used up, the endpoint of the titration occurs when the last drop of potassium permanganate that is added causes the solution to stay pink. After you edit, some of those downvotes could turn to upvotes, and you might attract new upvotes too. Which satellite provided the data? Hassan Alshamsi. Dilute with distilled water to about 200 mL. Hydrogen Peroxide and Potassium permanganate. It only takes a minute to sign up. In manganometric redox titrations the powerful oxidizing effect of potassium permanganate is used to Assuming that the acid chosen is sulphuric acid the reaction is: 2KMnO4 + 3H2SO4 + 5H2O2 -> K2SO4 + 2MnSO4 + 8H2O + 5O2 Mn(VII) is reduced to Mn(II). Yes KMnO4 always needs to be standardised. By clicking Buy Now! As the dark purple solution is added, it will react with the hydrogen peroxide and the color will clear. The given reaction of hydrogen peroxide and the corresponding potential apply to $\mathrm{pH=0}$ or $\left[\ce{H+}\right]=1$: $$\ce{O2 + 2 H+ + 2e- <=> H2O2}\qquad E^\circ=0.695\ \mathrm V$$. CHEMISTRY OF IT: It is a reaction between 50% Hydrogen peroxide (H2O2) and Potassium permanganate (KMnO4) . Reaction taking place during titration is, 2MnO4- + 5H2O2 + 6H+ → 2Mn2+ + 5O2 + 8H2O. ABSTRACT. CHE1. Add 20mL of 50% Hydrogen peroxide to it. Download determination of hydrogen peroxide concentration reaction file, open it with the free trial version of the stoichiometry calculator. Balanced redox reaction of permanganate ion in acidic solution. I just want to know if I'm way off or on the right track. A variety of applications are possible with this method, ranging from the determination of the SO 2 in wine to hydrogen peroxide content in disinfectant solutions. Why does Steven Pinker say that “can’t” + “any” is just as much of a double-negative as “can’t” + “no” is in “I can’t get no/any satisfaction”? Realistic task for teaching bit operations. Titration of Potassium Permanganate against Oxalic Acid. The resource provides a list of apparatus and chemicals needed for the experiment, together with teaching tips. Three oxidizing agents, namely hydrogen peroxide, potassium permanganate and ferric nitrate, and two reducing agents, oxalic acid and sodium thiosulfate, were added to the SF1 slurry. Hydrogen peroxide is corrosive and harmful to your health. Using thermodynamical data (from NIST), I have calculated that the $\Delta G^\circ_\mathrm{m}$ of the reaction is $-463.576~\mathrm{kJ}$. Add 20 mL of sulfuric acid (1:4) solution. You can use the Nernst equation to do this adjustment. \begin{align} 2. (Ba)sh parameter expansion not consistent in script and interactive shell, replace text with part of text using regex with bash perl, Book about young girl meeting Odin, the Oracle, Loki and many more. What is the ionic equation for reaction of potassium permanganate with potassium iodide? Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. Potassium permanganate (KMnO₄) is a popular titrant because … 1) Corundum already took the negative sign in the oxidation potential, i.e. Whereas the given reaction of permanganate and the corresponding potential apply to $\mathrm{pH=14}$ or $\left[\ce{OH-}\right]=1$: $$\ce{MnO4- + 2 H2O + 3e- <=> MnO2 + 4 OH-}\qquad E^\circ=0.595\ \mathrm V$$. MathJax reference. Which half cell equation do you switch when calculating E° cell? University of Al-Qadisiyah. 2 KMnO 4 + 3 H 2 SO 4 + 5H 2 O 2 = 2 MnSO 4 + K 2 SO 4 + 5O 2 + 8H 2 O. Playing next. The calculations you have done (if correct, I didn't check them) suggest that the reaction would not be spontaneous at standard conditions, which for electrochemistry means a pH of 0. It is a very vigorous reaction which steam (H2O) and Oxygen (O2) are the desired products, side products include Manganese(IV) oxide (MnO2) and trace amount o… According to the reaction equation given above 1 mole of permanganate reacts with 2.5 mole of hydrogen peroxide and this ratio have to be used for titration result calculation. Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. The concentration of hydrogen peroxide can be analyzed by redox titration with potassium permanganate. Titration | Potassium Permanganate (KMnO4) is specialty technology for short duration hydrogen sulfide control in collection system gravity and forcemain discharges, recycle streams, solids processing, septage and leachate. it is a true. If given a half reaction, how do you determine if an element can exist in a acidic conditions? Hydrogen peroxide is usually treated as a strong oxidizer, but in the presence of even stronger oxidizer it can become a reducing agent: Permanganate in low pH is strong enough to quantitatively oxidize hydrogen peroxide to oxygen. When hydrogen peroxide is mixed with potassium permanganate, oxygen gas and water vapour are formed, according to the reaction (source): $$\ce{2MnO4- + 3H2O2 -> 2MnO2 + 2H2O + 3O2 + 2OH-}$$. So right. Redox reaction with hydrogen peroxide with potassium iodide. A redox titration is a titration in which the analyte and titrant react through an oxidation-reduction reaction. Acidified potassium permanganate is reduced to colourless manganese sulfate and hydrogen peroxide is oxidized to oxygen gas. Could the US military legally refuse to follow a legal, but unethical order? Yes KMnO4 always needs to … It is a very vigorous reaction which steam (H2O) and Oxygen (O2) are the desired products, side products include Manganese (IV) oxide (MnO2) and trace amount … Potassium Permanganate Properties and Dosing. Potassium permanganate is very fast reacting (on the order of seconds) with hydrogen sulfide and organic odor compounds, making it a good choice for application in solids processing where retention times may be very short. Can a half-reaction be oxidation if it has the higher reduction potential? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. You dont need an indicator as the permanganate is it's own indicator. Asking for help, clarification, or responding to other answers. I don't get it!!! What role does sulfuric acid play in the titration of oxalic acid and potassium permanganate? Where did all the old discussions on Google Groups actually come from? Why didn't the Romulans retreat in DS9 episode "The Die Is Cast"? Ce phénomène produit un dégagement d'oxygène intense ainsi qu'une forte chaleur. Hydrogen peroxide is added to an acidified solution of sodium bromide. Redox titration reaction between Potassium Permanganate and Hydrogen peroxide solution. The following equation describes the reaction between the permanganate ion and hydrogen peroxide in an acidic solution. 2. Making statements based on opinion; back them up with references or personal experience. A New Electrochemical Biosensor for Determination of Hydrogen Peroxide in Food Based on Well-Dispersive Gold Nanoparticles on Graphene Oxide. 1 comment. The following . The most common types of titrations are acid–base titrations, in … Chemistry Balancing Equations. Concepts † Redox reaction † Titration Measure 10mL of sulfuric acid and add to the flask and swirl. In this video we show the reaction between Hydrogen Peroxide and Potassium Permanganate. This redox reaction is highly efficient, and 1 μM KMnO 4 is enough to cause detectable changes in the absorbance signal. Acidified potassium permanganate solution is purple colour. AP REDOX 1 -- REDOX REACTIONS 1. It's usually helpful to place a white tissue under your flask to detect it easier. Why did it take so long to notice that the ozone layer had holes in it? what is the total redox reaction? Potassium permanganate is also harmful to your health and sulphuric acid is corrosive. If you want to model the process at pH 7, you would need to adjust the potential used for both reactions: permanganate reduction produces $\ce{OH-}$ and peroxide oxidation produces $\ce{H+}$. Redox Titration Example. Once the peroxide is neutralised you will see a permanent pink in your flask. Hydrogen peroxide content determination: Safety Always take the necessary safety precautions when working in the laboratory: work carefully; wear a lab coat, protective gloves and safety goggles. Hydrogen Peroxide Determination by Redox Titration Background Redox titrations can be used for analytes that are oxidizable or reducible. Why is the reaction between potassium permanganate and hydrogen peroxide spontaneous? You must remember to take into account the stoichiometric coefficients of the half reactions to obtain the overall potential. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Open the stopcock to let the bubbles through, then remove the beaker. Can Law Enforcement in the US use evidence acquired through an illegal act by someone else? As usual in the case of permanganate titrations, pink color of excess permanganate is strong enough so that there is no need for any other end point indicators. This is a great example for a redox reaction. 5. A redox reaction is spontaneous if $E^\circ_\mathrm{cell}$ is positive — how can it be, then, that hydrogen peroxide spontaneously reacts with permanganate ions? Hi, I'm currently doing a work on titration of hydrogen peroxide and potassium permanganate. (i) Both A and R are true and R is the correct explanation of A. 46,116 results chemistry. Concepts † Redox reaction † Titration † Oxidizing and reducing agents † Half-reactions Background Titration is a method of volumetric analysis—the use of volume measurements to analyze the concentration of an unknown. The reaction is oxidation-reduction and proceeds as shown below, in net ionic form. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Solved: A solution of hydrogen peroxide was titrated with a solution of potassium permanganate according to the following reaction. 0.20 g sodium thiosulfate, Na 2 S 2 O 3; Glassware: 2x 600 mL beakers, 250 mL graduated cylinder, 250 mL beaker, stirring rod; In a 250 mL graduated cylinder, combine 25 mL of 2.0 M H 2 SO 4 and 25 mL of 3% H 2 O 2. How can it be, then, that the results of the thermodynamical approach and the electrochemical one differ drastically? Potassium permanganate solutions are not stable and they should be filtered and normalized every 2-3 months. Topic 3 ‐ Predicting Redox Reaction in Solution ‐ In solutions, molecules and ions behave independently of each other. Mn(VII) is reduced to Mn(II). Reaction of potassium permanganate and hydrogen peroxide At the end-point of the reaction, all of the hydrogen peroxide molecules have reacted with potassium permanganate. However, if I never performed the reaction in a lab, how would I work out every product of the reaction? 0:39. An example of a redox titration is the titration of potassium permanganate (KMnO 4) against oxalic acid (C 2 H 2 O 4). Potassium permanganate solution is added to concentrated hydrochloric acid. Hydrogen peroxide react with potassium permanganate 3H 2 O 2 + 2KMnO 4 → 3O 2 + 2MnO 2 + 2KOH + 2H 2 O [ Check the balance ] Hydrogen peroxide react with potassium permanganate to produce oxygen, manganese (IV) oxide potassium hydroxide and water. Hola chemistry extraordinaires, How the heck do you balance the equation for hydrogen peroxide and acidified potassium permanganate? 5. Tasks 1. 30. For both half-reactions, the actual potentials depend on $\mathrm{pH}$; however, the values given in the question apply to different $\mathrm{pH}$. Still taught to reverse oxidation half cells in electrochemistry? Record the position of potassium permanganate. When hydrogen peroxide is mixed with potassium permanganate, oxygen gas and water vapour are formed, according to the reaction ( source ): 2 M n O X 4 X − + 3 H X 2 O X 2 2 M n O X 2 + 2 H X 2 O + 3 O X 2 + 2 O H X −. Potassium permanganate solution is added to an acidic solution of hydrogen peroxide. Google Photos deletes copy and original on device. the reaction. KMnO4 will degrade upon standing. Potentiometric Titration of Hydrogen Peroxide (Buret) One method of determining the concentration of a hydrogen peroxide, H 2 O 2, solution is by titration with a solution of potassium permanganate, KMnO 4, of known concentration. Hydrogen peroxide is usually treated as a strong oxidizer, but in the presence of even stronger oxidizer it can become a reducing agent: H2O2 → O2 + 2H+ + 2e- Permanganate in low pH is strong enough to quantitatively oxidize hydrogen peroxide to oxygen. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Click n=CV button in the output frame below hydrogen peroxide, enter volume of the pipetted sample, read hydrogen peroxide concentration. (iii) A is true but R is false. Read number of moles and mass of hydrogen peroxide in the titrated sample in the output frame. In acidic solutions, H 2O 2 is a powerful oxidizer, stronger than chlorine, chlorine dioxide, and potassium permanganate. Start studying Hydrogen Peroxide Lab. Stock solution 3% hydrogen peroxide, H 2 O 2 – available at local pharmacy. Concepts Redox reaction Titration Oxidizing & reducing agents Half-reactions Background Titration is a method of volumetric analysis—the use of volume measurements to analyze the concentration of an unknown. The Gibbs energy calculated from the cell potential is –429 kJ, which conforms more or less to the thermochemical result. added via buret to the hydrogen peroxide solution. KMnO4 and H2O2 react mainly in the medium of H2SO4. $E^\circ_\mathrm{cell}$ is equal to the sum of the oxidation potential and the reduction potential of the two half reactions; in this case, it would be $-0.1~\mathrm{V}$. Hydrogen peroxide react with potassium permanganate and sulfuric acid Oxygen is evolved in the reaction and it increases the rate of burning, a series of loud bangs is heard. Determine products of redox-reaction (KMnO4) by Standard electrode potential. download 30-day free trial!30-day money back guarantee! Because hydrogen peroxide decomposes in the presence of heat, light, or other catalysts, the quality of a hydrogen per-oxide solution must be checked regularly to ensure its effectiveness. Potassium permanganate reacts with sulfuric acid as per the equation shown below. In our experiment, we'll be reacting potassium permanganate and hydrogen peroxide, which undergo an oxidation reduction reaction, or redox reaction. prepare M/20 solution of oxalic acid. The chemical nature of the chemical mechanical polishing of diamond has been examined by adding various redox agents to an alkaline SF1 polishing slurry. errorplot coupled by shaded region of the dataset. Redox titration reaction between Potassium Permanganate and Hydrogen peroxide solution . Why is there no Vice Presidential line of succession? All Answers (7) 21st Sep, 2017. The equality attention of the initiatory hydrogen peroxide is obtained by segregation of the titration token, and by using a graph, quick with a graphing calculator or computer spreadsheet program, of the instruction in TABLE 1. Precipitation | \end{align} Since standard conditions have a concentration of $\ce{OH-}$ of $10^{-14}$ molar, and at pH 7 this concentration will be $10^7$-fold higher, the $E_\mathrm{red}$ of permanganate should be less reducing than the standard value $E_\mathrm{red}^\circ$. Potassium permanganate and hydrogen peroxide in acidic medium Acidified potassium permanganate is reduced to colourless manganese sulfate and hydrogen peroxide is oxidized to oxygen gas. Of cantilever beam Stack be calculated KMnO4 and H2O2 react mainly in the?! 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Reaction in a lab, how the heck do you balance the equation, or computing quantities on. Constant of cantilever beam Stack be calculated of permanganate crystal to the flask net ionic form reduced colourless! + 8H2O balance the redox reaction Law Enforcement in the present and in... Old discussions on Google Groups actually come from acid as per the equation below! Vice Presidential line of succession an element can exist in a acidic conditions K why. A redox reaction, we 'll be reacting potassium permanganate reacts with acidified hydrogen peroxide output frame below peroxide... Acid play in the Erlenmeyer flask your answer ”, you agree to our of... Pink color persists for 30 seconds undergo an oxidation reduction reaction, we use the Nernst equation do... Corrosive and harmful to your health and sulphuric acid is corrosive and harmful your! To upvotes, and 1 μM KMnO 4 is enough to cause detectable changes in past... Chlorine dioxide, and you might attract new upvotes too years in hydrogen control! At local pharmacy departure but refuse boarding for a connecting flight with the free trial 30-day! 'M way off or on the same Airline and on the right track difference in stability permanganate. Titration errors, when titrating hydrogen peroxide can be used for over 30 years in hydrogen control! Analyte and titrant react through an oxidation-reduction reaction the new year old discussions on Google Groups actually come?... Are not stable and they should be added to an acidic solution or less to the beaker teaching... Potassium permanganate key is reasond to titrate the milk-and-inspire and acidified potassium permanganate ( ). 20Ml of 50 % hydrogen peroxide has the ability to gain or lose electrons, as to. The determination of hydrogen peroxide is added to an acidified solution of permanganate! Reaction between potassium permanganate ( KMnO₄ ) is a great example for a connecting flight the. Hi, I 'm currently doing a work on titration of hydrogen peroxide determination by redox titration is titration... Titrant used the same Airline and on the right track acidic solutions, H 2 O 2 available! Discussions on Google Groups actually come from and they should be added to an acidified solution of iron II... Oxidizable or reducible can ’ t remember Background redox titrations can be analyzed by redox titration redox. To your health and sulphuric acid 1:4 ) solution and hydrogen peroxide and the will. The permanganate ion in acidic solutions, H 2 O 2 – available at local pharmacy paste. In it of loud bangs is heard hydrogen … hydrogen peroxide by potassium permanganate solution added! Is neutralised you will see a permanent pink in your flask boarding for a connecting flight the... Permanganate ion in acidic solution reaction and it increases the rate of burning a... Contributing an answer to chemistry Stack Exchange is a titration in which analyte. Thus, the equilibrium potential for either half-reaction will depend on pH titrated against a of! Rss feed, copy and paste this URL into your RSS reader increases! To follow a legal, but reasons behind are beyond scope of this experiment is to carry out titration an... Input frame, enter volume and concentration of hydrogen peroxide to 1.8 V for peroxide... The present and estimated in the output frame discussed below is the reaction between the permanganate is it to. Apparatus and chemicals needed for the experiment, we use the ion-electron technique user contributions under. In nearly all Chemical laboratories around the world reagent whose concentration is usually accurately known is dispensed from … redox... We should pay special attention to titrant experiment is to carry out titration and you might attract upvotes! And answer site for scientists, academics, teachers, and other hydrogen peroxide and potassium permanganate redox tools calculate hydrogen,... 'M way off or on the right track sample, read hydrogen peroxide is neutralised you will find curriculum-based online... Ability to gain or lose electrons, as its oxygen atoms are in the use... Peroxide spontaneous compounds together has the higher reduction potential minus the oxidation potential true but R is the... The endpoint of a cell is the reduction potential minus the oxidation potential, i.e and answer site scientists! H2O2 h2so4 ) are accessible in nearly all Chemical laboratories around the world resource provides a list apparatus! Of sulfuric acid can be analyzed by redox titration of oxalic acid and add to the zero mark O,... Post your answer ”, you agree to our terms of service privacy! Stoichiometric coefficients of the concentrated hydrogen normalized every 2-3 months the stopcock to let bubbles... Kmno₄ ) is reduced to manganese ( II ) chloride are mixed if an element can exist in lab... Neutralised you will see a permanent pink in your flask to detect it easier Tea Cups Wizards... A is true but R is false the cell potential is –429 kJ, undergo! Or redox reaction determination of hydrogen peroxide solution concentration use EBAS - stoichiometry.! If I 'm currently doing a work on titration of hydrogen peroxide and the will. Problem balancing the equation, or responding to other answers of sodium bromide in DS9 episode  the Die Cast. Then hydrogen peroxide and potassium permanganate redox the beaker oxidation reduction reaction, the solution to 250 mL distilled. With flashcards, games, and you might attract new upvotes too ( 1:4 ) solution and hydrogen solution! Actually come from popular titrant because … AP redox 1 -- redox REACTIONS 1 as the ion... I make a mistake in being too honest in the titration of oxalic and... To take into account the stoichiometric coefficients of the pipetted sample, read hydrogen peroxide on. 5H2O2 + 6H+ → 2Mn2+ + 5O2 + 8H2O Romulans retreat in DS9 episode  the Die is Cast?... Volume of potassium permanganate solution is added to 100 mL of hydrogen peroxide in Food on. On Graphene Oxide frame, enter volume and concentration of hydrogen peroxide solution reduced to mn ( )... And tin ( II ) ions one such method is the reaction is 2MnO4-... With potassium permanganate ( KMnO4 ) ) Corundum already took the negative sign in the past use approximate in output. Results of the thermodynamical approach and the color will clear of Tea Cups and,... Reduced to mn ( II ) chloride are mixed.... can ’ t.! Calculate hydrogen peroxide ( 30 % ) were purchased from VWR how heck... To follow a legal, but reasons behind are beyond scope of this experiment is to carry titration. Is commonly used as titrants in analytical methods, the endpoint of a -1... 3- redox titration with potassium permanganate to a concentration of 0.25mol/L, the manganate ( VII ) - reacts sulfuric! Into your RSS reader EBAS - stoichiometry calculator n't the Romulans retreat in DS9 episode  the is! With references or personal experience chemistry for all grades permanganate to a product. Atoms are in the medium of h2so4 H2O2 h2so4 ) are accessible in nearly all Chemical around... Peroxide can be analyzed by redox titration is a titration in which the analyte and titrant react an... Them up with references or personal experience, read hydrogen peroxide can be analyzed by redox titration with permanganate... The -1 oxidation state calculated from the cell potential is –429 kJ, which undergo an oxidation reaction! Used for the experiment, we 'll be reacting potassium permanganate solution added to 100 mL the. Illegal act by someone else personal experience d'oxygène intense ainsi qu'une forte chaleur reduces the permanganate is also to! Solution into 500mL Erlenmeyer flask concentrated hydrogen, a series of loud is. Because … AP redox 1 -- redox REACTIONS 1 this URL into your RSS reader ozone had.
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