Two mole of an ideal gas is expanded isothermally and reversibly from 1 litre ot 10 litre at 300 K. The enthalpy change (in kJ) for the process is [IIT JEE (Screening) 2004]

(1) 11.4 kJ

(2) –11.4 kJ

(3) 0 kJ

(4) 4.8 kJ

Concept Videos :-

#30 | 2nd Law of Thermodynamics

Concept Questions :-

CP and CV and Relation for Real Gas

(3) ΔH = nCp ΔT

The process is isothermal therefore

ΔG = 0; ∴ ΔH = 0

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