JEE Main 2022 Chemistry question

ChemistryThermodynamicsJEE Main 2022

A gas (Molar mass = 280 g ) was burnt in excess in a constant volume calorimeter and during combustion the temperature of calorimeter increased from 298.0 K to 298.45 K. If the heat capacity of calorimeter is 2.5 kJ and enthalpy of combustion of gas is 9 kJ then amount of gas burnt is g. (Nearest Integer)

Answer: 35

Solution

The heat evolved is q = C kJ. Taking $Δ H ≈

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Question ID VK-034318