Questions
N moles of an ideal diatomic gas are in a cylinder at temperature T. suppose on supplying heat to the gas, its temperature remain constant but n moles get dissociated into atoms. Heat supplied to the gas is
detailed solution
Correct option is B
Since the gas is enclosed in a vessel, therefore, during heating process, volume of the gas remains constant. Hence, no work is done by the gas. It means heat supplied to the gas is used to increase its internal energy only.Initial internal energy of the gas is U1 = N(52R)TSince n moles get dissociated into atoms, therefore, after heating, vessel contains (N - n) moles of diatomic gas and 2n moles of a mono-atomic gas. Hence the internal energy for the gas, after heating, will be equal toU2 =(N-n)(52R)T+2n(32R)T = 52NRT+12nRTHence, the heat supplied = increase in intemal energy = (U2-U1) = 12nRTTalk to our academic expert!
Similar Questions
The average kinetic energy of a gas molecule at absolute temperature T is
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests