Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 17 - Thermochemistry - 17 Assessment - Page 588: 89

Answer

$\Delta$H = -184.76 kJ

Work Step by Step

Since heat is listed as a product, then it is an exothermic reaction and the sign of the enthalpy change is negative. Multiply both sides of the equation, including the enthalpy change, by 2 in order to achieve the desired equation and enthalpy change.
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