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Question

Question: For the reaction, C<sub>7</sub>H<sub>8</sub>(l) + 9O<sub>2</sub>(g) → 7CO<sub>2</sub>(g) + 4H<sub>2...

For the reaction,

C7H8(l) + 9O2(g) → 7CO2(g) + 4H2O(l), the calculated heat of reaction is 232 kJ/mol and observed heat of reaction is 50.4 kJ/mol, then the resonance energy is

A

– 182.2 kJ / mol

B
  • 182.2 kJ / mol
C

172 kJ/ mol

D

None

Answer

– 182.2 kJ / mol

Explanation

Solution

As we know that,

Resonance energy

= ∆H0 (observed) – ∆H0 ( calculated)

= (50.4 – 232.6) kJ / mol = – 182.2 kJ mol–1