Home
Class 11
CHEMISTRY
The volume of a gas decreases from 500 c...

The volume of a gas decreases from `500 c c` to `300 c c` when a sample of gas is compressed by an average pressure of 0.6 atm. During this process 10 J of heat is liberated. The change in internal energy is

A

`-2.16 J`

B

`12.156J`

C

`2.16J`

D

`101.3 J`

Text Solution

Verified by Experts

The correct Answer is:
C
Here: Change in Volume (V) = 500 - 300 = 200cc = 0.2 litre, Pressure (P) = 0.6 atm and heat liberated (q) = 10J Work done (W) `= P Delta V = (0.2 xx 0.6) = 0.12` litre - atm But 1litre - atm = 101.3J.
hence W = `0.12 xx 101.3 = 12.156J`. We also know that heat is liberated, therefore it would be negative. Thus change in `Delta E = 9+W = -10 +12.16 = 2.16J`.
Promotional Banner

Similar Questions

Explore conceptually related problems

500cm^(3) of a sample of an ideal gas is compressed by an average pressure of 0.1 atm of 250 cm^(3) . During this process, 10J of heat flows out to the surroundings. Calculate the change in internal enegry of the system.

A sample of ideal gas (gamma=1.4) is heated at constant pressure. If an amount of 140 J heat is supplied to the gas, then change in internal energy of the gas

A gas expends from 1.5 to 6.5 L against a constant pressure of 0.5 atm and during this process the gas also absorbs 100 J of heat. The change in the internal energy of the gas is

A gas absorbs 200J of heat and expands against the external pressure of 1.5 atm from a volume of 0.5 litre to 1.0 litre. Calculate the change in internal energy.

A sample of diatomic gas is heated at constant pressure. If an amount of 280 J of heat is supplied to gas, find ratio of work done by gaa and change in internal energy

A sample of gas is compressed by an average pressure of 0.50 atmosphere so as to decrease its volume from 400cm^(3) to 200cm^(3) . During the process 8.00 J of heat flows out to surroundings. The change in internal energy of the system is

A gas is compressed at a constant pressure of 50N/m^(2) from a volume 10m^(3) to a volume of 6m^(3) . 100J of heat is added to the gas then its internal energy increases by - - in J ?