Home
Class 11
PHYSICS
The molar heat capacity of a gas at cons...

The molar heat capacity of a gas at constant volumes is `C_V`. If `n` moles of the gas under `DeltaT` change in temperature it's internal energy will change by `nC_VDeltaT`

A

only if the change of temperature occurs at constant volume

B

only if the change of temperature occurs at constant pressure

C

in any process which is not adiabatic

D

in any process

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • LAWS OF THERMODYNAMICS

    CP SINGH|Exercise EXERCISE|131 Videos
  • KINETIC THEORY OF GASES

    CP SINGH|Exercise Exercises|79 Videos
  • MOTION IN A PLANE

    CP SINGH|Exercise Exercises|69 Videos

Similar Questions

Explore conceptually related problems

The molar heat capacity for an ideal monatomic gas is 3R.If dQ is the heat supplied to the gas and dU is the change in its internal energy then for the process the ratio of work done by the gas and heat supplied is equal to

The molar specific heat capacity at constant volume (C_(V)) for an ideal gas changes with temperature as shown in the graph. Find the amount of heat supplied at constant pressure in raising the temperature of one mole of the gas from 200 K to 400 K.

Knowledge Check

  • Molar heat capacity for a gas at constant temperature and pressure is

    A
    `3//2` R
    B
    `5//2` R
    C
    depends on atomicity of gas
    D
    infinity `(infty)`
  • For an ideal gas, (i) the change in internal energy in a constant pressure process from temperature T_1 to T_2 is equal to nC_V(T_2-T_1) , where C_V is the molar heat capacity at constant volume and n is the number of moles of the gas (ii) The change in internal enregy of the gas and the work done by the gas are equal in magnitude in an adiabatic process. (iii) The internal energy does not change in an isothermal process. ltbr. (iv) no heat is added or removed in an adiabatic process

    A
    (i),(iii)
    B
    (ii),(iii)
    C
    (iii),(iv)
    D
    all
  • Molar heat capacity of gas whose molar heat capacity at constant volume is C_V , for process P = 2e^(2V) is :

    A
    `C_V + R/(1+2V)`
    B
    `C_V +R/(2V)`
    C
    `C_V + R/V`
    D
    None of these
  • Similar Questions

    Explore conceptually related problems

    A given sample of an ideal gas (gamma = 1.5 ) is compressed adiabatically from a volume of 150 cm ^(3) to 50 cm ^(3) . The initial pressure and the initial temperature are 150 kpa and 300K . Find (a) the number of moles of the gas in the sample, (b) the molar heat capacity at constant volume, (c) the final pressure and temperature, (d) the work done by the gas in the process and (e) the change in internal energy of the gas .

    The molar specific heat of a gas at constant volume is 24 J/mol K. then change in its internal energy if one mole of such gas is heated at constant from 10^(@)C to 30^(@)C is

    C_p is always greater than C_v for a gas, which of the following statements provide, partly or wholly, the reason for this? (i) No work is done by a gas at constant volume (ii) When a gas absorbs heat at constant pressure, its volume must change (iii) For the same change in temperature, the internal energy of a gas changes by a smaller amount at constant volume that at constant pressure (iv) The internal energy of an ideal gas is a function only of its temperature

    Molar specific heat at constant volume C_v for a monatomic gas is

    An ideal gas undergoes an isobaric process. If its heat capacity is C , at constant volume and number of mole n, then the ratio of work done by gas to heat given to gas when temperature of gas changes by DeltaT is :