Chemical Thermodynamics Question 380

Question: One mole of an ideal gas is expanded isothermally and reversibly to half of its initial pressure. ΔS for the process in JK1mol1 is [ln2=0.693,and,R=8.314,J/(mol,K)]

Options:

A) 6.76

B) 5.76

C) 10.76

D) 8.03

Show Answer

Answer:

Correct Answer: B

Solution:

  • For isothermal process (ΔT=0)

ΔS=RnP1P2=8.314n,2,

=8.314×0.693=5.76



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