ThermodynamicsHard

Question

Oxygen gas weighing 64 g is expanded from 1 atm to 0.25 atm at 30°C. What is the entropy change, assuming the gas to be ideal? (ln 4 = 1.4, R = 8.3 J/K-mol)

Options

A.23.24 J/K
B.34.86 J/K
C.46.48 J/K
D.11.62 J/K

Solution

$\Delta S = nR.\ln\frac{P_{1}}{P_{2}} = \frac{64}{32} \times 8.3 \times \ln\frac{1}{0.25} = 23.24\text{ J/K}$

Create a free account to view solution

View Solution Free
Topic: Thermodynamics·Practice all Thermodynamics questions

More Thermodynamics Questions

The increase of pressure on ice ⇋ water system at constant temperature will lead to :...Assume ideal gas behaviour for all the gases considered and vibrational degrees of freedom to be active. Separate equimo...The incorrect expression among the following is :-...A student is calculating the work done by 2 mole of an ideal gas in a reversible isothermal expansion shown in the figur...The entropy change of 2.0 moles of an ideal gas whose adiabatic exponent $\gamma$ = 1.50, if as a result of a certain pr...