MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Thermodynamic Processes

Two moles of ...

Question

Two moles of helium gas undergo a cyclic process as shown in figure. Assuming the gs to be ideal, calculate the following quantities in this process. The net change in the heat energy in $J$ .

Open in App

Solution

Since the process is cyclic, change in internal energy in one cycle is $0$ .
Hence net change in heat energy is equal to the negative of net work done.

$W_{A B} = P (V_{B} - V_{A}) = 2 R (T_{B} - T_{A})$

$W_{B C} = - 2 R T_{B} l n (\frac{P_{B}}{P_{C}}) = - 2 R (400) l n (2)$

$W_{C D} = P (V_{D} - V_{C}) = 2 R (T_{D} - T_{C}) = - W_{A B}$

$W_{D A} = - 2 R T_{D} l n (\frac{P_{D}}{P_{A}}) = 2 R (300) l n (2)$

${Q = - W}_{n e t} = 2 (8.314) l n (2) (400 - 300) \approx 1153 J$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Two moles of helium gas undergo a cyclic process as shown in figure. Assuming the gs to be ideal, calculate the following quantities in this process. The net change in internal energy.

Q. Two moles of helium gas undergo a cyclic process as shown in Figure. Assuming the gas to be ideal, calculate the following quantities in this process. The net change in the heat energy.

Q. Two moles of helium gas undergo a cyclic process as shown in figure. Assuming the gs to be ideal, calculate the following quantities in this process. The net work done in

J

.

Q. Two moles of helium gas undergo a cyclic process as shown in Figure. Assuming the gas to be ideal, calculate the following quantities in this process. The net work done in Joule .

Q. Two moles of helium gas undergoes a cyclic process as shown in the figure. Assume the gas to be ideal, then the net change in heat energy is:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Thermodynamic Processes

PHYSICS

Watch in App

explore_more_icon

Explore more

Thermodynamic Processes

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon