Question

\(500 \text{ gram}\) of a diatomic gas is enclosed at a pressure of \(10^{5} \text{ Nm}^{-2}\). The density of the gas is \(5 \text{ kg m}^{-3}\). The energy of one mole of the gas due to its thermal motion is [consider the gas molecule as a rigid rotator].

• A. \(1.5 \times 10^{4} \text{ J}\)
• B. \(2.5 \times 10^{4} \text{ J}\)
• C. \(1.5 \times 10^{7} \text{ J}\)
• D. \(2.5 \times 10^{7} \text{ J}\)

Hint:

For rigid diatomic molecules, energy per mole is $2.5 RT$.

Answer 1

The Correct Option is B