Given the following balanced reaction ... MnO2 + 2 KI + 2 H2SO4 → MnSO4 + K2SO4 + 2 H2O + I2 13.6 grams of KI (MW = 165.91 g/mol) and 8.57 g of MnO2 (MW = 86.94 g/mol) are reacted with excess H2SO4. Which is the limiting reagent?

Given the following balanced reaction ... MnO2 + 2 KI + 2 H2SO4 → MnSO4 + K2SO4 + 2 H2O + I2 13.6 grams of KI (MW = 165.91 g/mol) and 8.57 g of MnO2 (MW = 86.94 g/mol) are reacted with excess H2SO4. Which is the limiting reagent?

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

Chapter21: The Chemistry Of The Main Group Elements

Section: Chapter Questions

Problem 120IL

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Concept explainers

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".

Question

Given the following balanced reaction ...

MnO₂ + 2 KI + 2 H₂SO₄ → MnSO₄ + K₂SO₄ + 2 H₂O + I₂

13.6 grams of KI (MW = 165.91 g/mol) and 8.57 g of MnO₂ (MW = 86.94 g/mol) are reacted with excess H₂SO₄. Which is the limiting reagent?

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