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 179g: 82


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Work Step by Step

a) $2\ Fe(s)+3\ Cl_2(g)\rightarrow 2\ FeCl_3(aq)$ b) Number of moles of iron: $10.0\ g\div 55.845\ g/mol=0.179\ mol$ Mass of chlorine: $0.179\ mol\times3/2\times 70.90\ g/mol=19.04\ g$ Mass of chloride: $0.179\ mol\times 162.2\ g/mol=29.03\ g$ c) $18.5/29.03\times 100\%=63.72\%$ d) Number of moles of chlorine: $10.0\ g\div 70.90\ g/mol=0.141\ mol$, it's the limiting reactant Mass of chloride: $0.141\ mol\times 2/3\times 162.2\ g/mol=15.25\ g$
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