Answered: Suppose that 103.2 mL of 0.8117-M…

Suppose that 103.2 mL of 0.8117-M H3PO4(aq) is reacted with excess Cr. What mass (in grams) of H2 will be formed in this reaction? 2Cr(s) + 2H3PO4(aq) --> 3H2(g) + 2CrPO4(s)

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter12: Gravimetric Methods Of Analysis

Section: Chapter Questions

Problem 12.19QAP

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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

Suppose that 103.2 mL of 0.8117-M H₃PO₄(aq) is reacted with excess Cr. What mass (in grams) of H₂ will be formed in this reaction?

2Cr(s) + 2H₃PO₄(aq) --> 3H₂(g) + 2CrPO₄(s)

Expert Solution

Step 1

The reaction given is

2Cr(s) + 2H₃PO₄(aq) --> 3H₂(g) + 2CrPO₄(s)

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