QuestionThermodynamics / isothermal reversible compression
A cylinder fitted with a frictionless piston containing 2.0 mol of He gas at 1 bar is kept in a large constant-temperature bath at 100 K. The pressure is reversibly increased to 2.0 bar. The w, q and ΔU for this process are respectively : (Given R = 8.3 J K⁻¹ mol⁻¹, ln 2 = 0.69)
- (a) 1145 J, – 1145 J, 0 J
- (b) – 1145 J, 1145 J, 0 J
- (c) 498 J, – 498 J, 1 J
- (d) – 498 J, 498 J, 1 J
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