Answered: Hydrogen peroxide releases oxygen gas…

Hydrogen peroxide releases oxygen gas on decomposition: 2 H202 (1) --> 2 H20 (1) + O2 (g) ΔΗ - 196.1 kJ rxn How much heat, in kJ, is released when 652 g of H2O2 decomposes?

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter7: Chemical Energy

Section: Chapter Questions

Problem 56E: Hydrogen gives off 120. J/g of energy when burned in oxygen, and methane gives off 50. J/g under the...

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Question

Hydrogen peroxide releases oxygen gas on
decomposition:
2 H202 (1) --> 2 H20 (1) + O2 (g)
ΔΗ
- 196.1 kJ
rxn
How much heat, in kJ, is released when 652 g of
H2O2 decomposes?

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