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MHT CET Chemistry question

ChemistryThermodynamicsMHT CET

Assuming enthalpy of combustion of hydrogen at 273 K is kJ and enthalpy of fusion of ice at the same temperature to be kJ, calculate enthalpy change during formation of 100 g of ice

Answer: (B)

Solution

Forming 1 mol ice = forming 1 mol liquid water ( kJ) then freezing it ( kJ) = kJ/mol; 100 g = 100/18 = 5.56 mol,

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Question ID VK-064587