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Some "Beetles" Defend Themselves by Spraying Hot Quinone,C6H4O2(l),at Their Enemies

question 38

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Some "beetles" defend themselves by spraying hot quinone,C6H4O2(l) ,at their enemies.Calculate △rH° for this reaction.
C6H4(OH) 2(l) + H2O2(l) → C6H4O2(l) + 2 H2O(l)
Given: C6H4(OH) 2(l) → C6H4O2(l) + H2(g) +177.4 kJ/mol
The standard enthalpies of formation of H2O2(l) and H2O(l) are -187.4 and -285.8 kJ/mol,respectively.

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