Weighed out 1.562 g Fe-Ash (formula wt = 392.13 g/mol) and dissolved in 40ml of water. It took 28.65 ml to reach endpoint with the KMnO4 solution in the beret. What is the molarity of the KMnO4 solution? 8H^+(aq) + 5Fe^2 (aq) + MnO^4-(aq) --> Mn^2+(aq) + 5Fe^3+(aq) + 4H2O

Weighed out 1.562 g Fe-Ash (formula wt = 392.13 g/mol) and dissolved in 40ml of water. It took 28.65 ml to reach endpoint with the KMnO4 solution in the beret. What is the molarity of the KMnO4 solution? 8H^+(aq) + 5Fe^2 (aq) + MnO^4-(aq) --> Mn^2+(aq) + 5Fe^3+(aq) + 4H2O

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter1: Basic Concepts Of Chemistry

Section: Chapter Questions

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

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8H^+(aq) + 5Fe^2 (aq) + MnO^4-(aq) --> Mn^2+(aq) + 5Fe^3+(aq) + 4H2O

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Malic acid (C4H6O5) is a dicarboxylic acid that naturally occurs in the production of bignay wine. Maria was tasked to find out the acid content in a 200.0 mL wine sample by titrating it with a standardized solution of KOH. He was able to establish the working concentration of the KOH solution by using 39.12 mL of it to titrate a primary standard of KHP that weighed 3.021 g. The grams and %w/w of Malic acid present in the 200.0 mL wine sample were then determined by titrating a 20.00 mL aliquot using 48.95 mL of the standardized KOH solution. C4H6O5 (aq) + 2KOH (aq) ↔ K2C4H4O5 (aq) + 2H2O (l) Assume the density of the wine sample is 1.000 g/mL MM of KHP = 204.22 g/mol MM of C4H6O5 = 134.0874 g/mol ? What is the molar concentration of the prepared KOH solution?…
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