Exercise III- 21. (a) How many grams of H2O2 are contained in a solution that reguires for titration 14.05 mLof KMNO4 of which 1.000 mL 0.008378 g Fe (i.e. will oxidize that amount of iron from thedivalent to the trivalent state)? (b) How many grams and how many milliliters of oxygen measureddry and under standard conditions are evolved during the titration?2. What volume of 0.0300 M KMNO4 is required to react in acid solution with 5.00 mL of H2O2 that has adensity of 1.01 g/mL and contains 3.00% by weight H,O2? The permanganate is reduced to Mnand the H2O2 oxidized to O2.2+3. (a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000 g is treated witha 0.6000 g of pure H2C,O4.2H20 and dilute H2SO4 and after reduction has taken place(MnO2 + H2C,O4 + 2H*0.1000 N KMNO4 for titration? (b) If pure As2O3 were used instead of oxalic acid, how many gramswould be required in order for the other numerical data to remain the same?2+Mn* + 2CO2 + 2H2O), the excess oxalic acid requires 26.26 mL of4. The reaction between potassium permanganate and sulfur dioxide in acid solution is as follows:MnO4+ SO2 + H20 Mn2+ + H* +SO,2(a) Balance the equation. (b) If 45.00 mL of 0.04000 M KMNO4 is treated with SO2, how manymilliliters of 0.100 N NAOH is required to neutralize the acid formed? The excess SO2 is removedby boiling.5. Sodium formate reacts with permanganate in neutral solution according to the equationCHO2+ MnO4 + H2O → MnO2(s)+ CO2+ OH"(a) Balance the equation. (b) A 0.500 g sample containing sodium formate is treated with50.00 mL of 0.0600 M MnO4 (an excess) in neutral solution, and the reaction given above isallowed to proceed to completion. The solution is filtered to remove the MnO2, acidified withH2SO4, and titrated with 30.00 mL of 0.1000 M H2C,O4. The MnO4 is reduced to Mn2+ and theoxalate oxidized to CO2. Calculate the percentage of NaCHO2 in the sample.

Hii there, As there are multiple question posted. we are answering first question. If you need…

(a) How many grams of H202 are contained in a solution that requires for titration 14.05 mL of KMNO4 of which 1.000 mL 0.008378 g Fe (i.e. will oxidize that amount of iron from the divalent to the trivalent state)? (b) How many grams and how many milliliters of oxygen measured dry and under standard conditions are evolved during the titration?

(a) How many grams of H202 are contained in a solution that requires for titration 14.05 mL of KMNO4 of which 1.000 mL 0.008378 g Fe (i.e. will oxidize that amount of iron from the divalent to the trivalent state)? (b) How many grams and how many milliliters of oxygen measured dry and under standard conditions are evolved during the titration?

Living by Chemistry

2nd Edition

ISBN:9781464142314

Author:Angelica M. Stacy

Publisher:Angelica M. Stacy

ChapterU6: Showtime: Reversible Reactions And Chemical Equilibrium

Section: Chapter Questions

Problem 3STP

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