Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 6 - Thermochemistry - Exercises - Page 289: 76


$-610\text{ kJ}$

Work Step by Step

$P_4O_{10(s)}\Rightarrow P_{4(s)}+5O_{2(g)}$ 2967.3 kJ $6PCl_{s(g)}\Rightarrow 6PCl_{3(g)}+6Cl_{2(g)}$ 505.2kJ $P_{4(s)}+6Cl_{2(g)}\Rightarrow 4PCl_{3(s)}$ -1225.6 kJ $10PCl_{3(g)}+5O_{2(g)}\Rightarrow 10Cl_3PO_{(g)}$ -2857 kJ Summing all of these enthalpy values, we reach the final value of $-610\text{ kJ}$.
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