Determine △H o for the decomposition of hydrogen peroxide. H 2O 2(l) →   O 2(g) + H 2O(l) Given:  H 2(g) + O 2(g) → H 2O 2(l)  △H o = -187.78 kJ  H 2(g) +   O 2(g) → H 2O(l)  △H o = -285.83 kJ

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Determine △H o for the decomposition of hydrogen peroxide.
H 2O 2(l) →   O 2(g) + H 2O(l)
Given:  H 2(g) + O 2(g) → H 2O 2(l)  △H o = -187.78 kJ
 H 2(g) +   O 2(g) → H 2O(l)  △H o = -285.83 kJ

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