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A sample of n-octane (1.14 ~g ) was completely burnt in excess of oxygen in a bomb calorimeter, whose heat capacity is 5 ~kJ ~K ⁻¹ . As a result of combustion reaction, the temperature of the calorimeter is increased by 5 K. The magnitude of the heat of combustion of octane at constant volume is ______ kJ mol ⁻¹ (nearest integer).

Correct answer

0

Step-by-step solution

Mole of octane = 1.14 114 =0.01 ~mole Heat evolved = C T aligned & =5 5 ~kJ & =25 ~kJ aligned Magnitude of Heat of combustion = 25 0.01 =2500 kJ / mole

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