MyQuestionIcon

1

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

Heat Capacity at Constant Volume

A vessel cont...

Question

A vessel contains helium, which expands at constant pressure when 15 kJ of heat is supplied to it. What will be the variation of the internal energy of the gas? (in kJ)

A

7

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

8

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

6

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

9

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D 9
Helium is monoatomic.
Hence, $γ = C_{p} / C_{v} = 5 / 3$
At constant pressure, heat supplied $= Δ Q = n C_{p} Δ T = 15 k J$
Internal energy change $= Δ U = n C_{v} Δ T = n C_{p} Δ T / γ = \frac{3}{5} \times 15 k J = 9 k J$

Suggest Corrections

thumbs-up

0

Similar questions

Q. When a monoatomic gas expands at a constant pressure, what percentage of heat supplied is used to increase the internal energy of the gas?

1 a t m

pressure with a volume

800 c m^{3}

100 J

of heat is supplied to the gas, it expands to

1 L

at constant pressure. The change in its internal energy is

Q. When a monoatomic gas expands at constant pressure, the percentage of heat supplied that increases the internal energy of the gas and that which is involved in expansion is :

1 m o l e

of a monoatomic gas expands at constant pressure the ratio of the heat supplied that increases the internal energy of the gas and that used in expansion is

Q. 5 mol of gas at 5 atm pressure contained in a 100L cylinder absorbed 30.26 kJ of heat when it expanded to 200L at 2atm pressure. The change in internal energy of gas is:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Heat Capacity

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Heat Capacity at Constant Volume

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon