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Determine △rH° for the decomposition of hydrogen peroxide.
H2O2(l) →1/2 O2(g) + H2O(l)
Given: H2(g) + O2(g) → H2O2(l) △rH° = -187.78 kJ/mol
H2(g) + 1/2 O2(g) → H2O(l) △rH° = -285.83 kJ/mol
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