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MHT CET Chemistry question

ChemistryThermodynamicsMHT CET

If the heat of combustion of solid benzoic acid at constant volume is kJ at 27 °C, the heat of combustion at constant pressure will be

Answer: (C)

Solution

C6H5COOH(s) + 7.5 O2(g) -> 7CO2(g) + 3H2O(l) has = 7 - 7.5 = -0.5, so = + RT =

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Question ID VK-064472