Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 3 - Chemical Reactions and Reaction Stoichiometry - Exercises - Page 113: 3.16c

Answer

$4PH_3(g) + 8O_2(g)\rightarrow 6H_2O(g)+P_4O_{10}(s)$

Work Step by Step

Phosphine is PH_3(g). Oxygen gas is $O_2(g)$. Water vapor is $H_2O(g)$. Tetraphosphorous decaoxide is $Ph_4O_{10}(s)$. $PH_3(g) + O_2(g)\rightarrow H_2O(g)+P_4O_{10}(s)$ Add a coefficient of 4 to $PH_3$ to balance $P$. $4PH_3(g) + O_2(g)\rightarrow H_2O(g)+P_4O_{10}(s)$ Add a coefficient of 6 to $H_2O$ to balance $H$. $4PH_3(g) + O_2(g)\rightarrow 6H_2O(g)+P_4O_{10}(s)$ Add a coefficient of 8 to $O_2$ to balance $O$. $4PH_3(g) + 8O_2(g)\rightarrow 6H_2O(g)+P_4O_{10}(s)$
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