Consider the following processes (treat all gases as ideal).
1.The pressure of 1 mole of oxygen gas is allowed to double isothermally.
2.Carbon dioxide is allowed to expand isothermally to 10 times its original volume.
3.The temperature of 1 mol of helium is increased 25°C at constant pressure.
4.Nitrogen gas is compressed isothermally to half its original volume.
5.A glass of water loses 100 J of energy reversibly at 30°C.
Which of these processes lead(s) to an increase in entropy?
A)1 and 4
B)5
C)3 and 5
D)2 and 3
E)1 and 2

Question

Consider the following processes (treat all gases as ideal).
1.The pressure of 1 mole of oxygen gas is allowed to double isothermally.
2.Carbon dioxide is allowed to expand isothermally to 10 times its original volume.
3.The temperature of 1 mol of helium is increased 25°C at constant pressure.
4.Nitrogen gas is compressed isothermally to half its original volume.
5.A glass of water loses 100 J of energy reversibly at 30°C.
Which of these processes lead(s) to an increase in entropy? 
A)1 and 4
B)5
C)3 and 5
D)2 and 3
E)1 and 2

Quizplus · Accepted Answer

The Answer of Consider the following processes (treat all gases as ideal).
1.The pressure of 1 mole of oxygen gas is allowed to double isothermally.
2.Carbon dioxide is allowed to expand isothermally to 10 times its original volume.
3.The temperature of 1 mol of helium is increased 25°C at constant pressure.
4.Nitrogen gas is compressed isothermally to half its original volume.
5.A glass of water loses 100 J of energy reversibly at 30°C.
Which of these processes lead(s) to an increase in entropy? 
A)1 and 4
B)5
C)3 and 5
D)2 and 3
E)1 and 2

Consider the Following Processes (Treat All Gases as Ideal)