Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 4 Stoichiometry: Quantitative Information about Chemical Reactions - Study Questions: 137

Answer

See answer below.

Work Step by Step

1: Zn is in excess, $7.00\ g\div 65.38\ g/mol=0.107\ mol$ Ratio: $0.100/0.107=0.934\lt2$ 2: Zn is in stoichiometric amount, $3.27\ g\div 65.38\ g/mol=0.050\ mol$ Ratio: $0.100/0.050=2.00=2$ 3: Zn is the limiting reactant, $1.31\ g\div 65.38\ g/mol=0.020\ mol$ Ratio: $0.100/0.020=5.00\gt2$
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