) Use the following thermochemical equations (and Hess’s Law) to calculate ΔH°rxn for    B2H6(g)  2B(s) + 3H2(g) using the following thermochemical information 4B(s) + 3O2(g)  2 B2O3(s)                       DHo = -2509.1 kJ 2H2 (g) + O2 (g)  2H2O(l)                         DHo =-571.7 kJ B2H6(g) + 3O2(g)  B2O3(s) + 3H2O(l)     DHo =-2147.5 kJ

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
Section: Chapter Questions
Problem 36QAP: Given the following thermochemical equations: 4B(s)+3O2(g)2B2O3(s)H=2543.8kJ H2(g)+12...
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  1. ) Use the following thermochemical equations (and Hess’s Law) to calculate ΔH°rxn for    B2H6(g)  2B(s) + 3H2(g)

using the following thermochemical information

4B(s) + 3O2(g)  2 B2O3(s)                       DHo = -2509.1 kJ

2H2 (g) + O2 (g)  2H2O(l)                         DHo =-571.7 kJ

B2H6(g) + 3O2(g)  B2O3(s) + 3H2O(l)     DHo =-2147.5 kJ

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