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 - Page 179b: 11


Sodium sulfate is the limiting reactant. $8.6\ g\ Na_2S$

Work Step by Step

Number of moles of the reactants: Sulfate: $15\ g\div 142.04\ g/mol=0.11\ mol$ Carbon: $7.5\ g\div12.011\ g/mol=0.62\ mol$ Ratio: $0.62/0.11=5.9$ Sodium sulfate is the limiting reactant. From stoichiometry: $0.11\ mol\times 1_{Na_2S}/1_{Na_2SO_4} \times 78.04\ g/mol\ Na_2S=8.6\ g\ Na_2S$
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