1. A solution containing 18.6 g of chromium(II) chloride is reacted with a 15.0-g piece of zinc to produce chromium metal. (a) Which reactant is in excess? (b) Determine the excess masS (c) If 5.10 g of chromium metal is formed, what is the percentage yield?

1. A solution containing 18.6 g of chromium(II) chloride is reacted with a 15.0-g piece of zinc to produce chromium metal. (a) Which reactant is in excess? (b) Determine the excess masS (c) If 5.10 g of chromium metal is formed, what is the percentage yield?

Living by Chemistry

2nd Edition

ISBN:9781464142314

Author:Angelica M. Stacy

Publisher:Angelica M. Stacy

ChapterU4: Toxins: Stoichiometry, Solution Chemistry, And Acids And Bases

Section: Chapter Questions

Problem 20STP

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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

1. A solution containing 18.6 g of chromium(II) chloride is reacted with a 15.0-g piece of
zinc to produce chromium metal.
(a) Which reactant is in excess?
(b) Determine the excess mas
(c) If 5.10 g of chromium metal is formed, what is the percentage yield?

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