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Enthalpy of combustion of CH4, C2H6 and C3H8 are -210, -370 and -530 kcal/mol respectively. The approximate value of enthalpy of combustion of n-hexane is

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answer is 3.

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Detailed Solution

For each -CH2 the enthalpy of combustion is increased by 160 kcal/mol.∴ ∆comb HC6H6=-210-5 ×160=-1010 kcalmol

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