Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Given the following data: 

 

2C2H6 (g) + 7O2 (g) ------> 4CO2 (g) + 6H2 (g)             ΔH= -3120kJ

C (s) + O2 (g) -----> CO2 (g)                                          ΔH= -394kJ

2H2 (g) + O2 (g) ----->  2H2O (l)                                     ΔH= -572kJ

Use Hess’s law to calculate ΔH for the reaction: 2C(s) + 3H2 (g) -----> C2H6 (g)

 

ΔH= Answer.................. kJ

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