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Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to - 100°C is

10.73 kJ
16.15 kJ
18.11 kJ
18.33 kJ

Correct Answer: 18.11 kJ

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