Chemistry (4th Edition)

Published by McGraw-Hill Publishing Company
ISBN 10: 0078021529
ISBN 13: 978-0-07802-152-7

Chapter 5 - Section 5.3 - Enthalpy - Checkpoint - Page 200: 5.3.2


a) 11.2 kg

Work Step by Step

Energy consumed per mole of Cu= $\frac{333.8\,kJ}{4\,mol\,Cu}=83.45\,\,kJ/mol$ $\implies $ Moles of Cu produced= (Energy consumed)$\div$ (83.45 kJ/mol) $=\frac{1.47\times10^{4}\,kJ}{83.45\,kJ/mol}=176.15\,mol$ Mass of Cu produced= moles of Cu$\times$ molar mass of Cu $=176.15\,mol\times 63.546\,g/mol= 11200\,g$ $=11.2\,kg$ Option (a) is correct.
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