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

question 38

Multiple Choice

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.

• A)-206.8 kJ/mol
• B)-384.2 kJ/mol
• C)-561.6 kJ/mol
• D)+79.00 kJ/mol

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