Question

Calculate the energy of 1 mole of nitrogen at 27 degree Celsius.compare the energy of hydrogen gas at this temperature with the corresponding value of nitrogen gas ( given: Boltzmann constant (k=1.38×10to the power -23 jk to the power -1

Answer 1

Average kinetic energy of hydrogen gas is 1500 cal as H2 is also a diatomic gas.

Explanation:

N2 is a diatomic gas.

Average kinetic energy of 1 mole of N2 gas at 27°C (i.e. 300 K)

Average energy of N2 = 5/2 nRT

Where R is universal gas constant.

= 2 cal /mol.K

Average energy of N2 = 5/2 x 1 x 2 x 300 = 1500 calories.

H2 is also a diatomic gas the energy will also be the same.

Thus the average energy of both diatomic molecules/gases is same.

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