TS EAMCET · Physics · Kinetic Theory of Gases
The molar specific heat of a monoatomic gas at constant pressure is (Universal gas constant \(=8.3 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\) )
- A \(24.9 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\)
- B \(20.75 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\)
- C \(41.5 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\)
- D \(16.6 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\)
Answer & Solution
Correct Answer
(B) \(20.75 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\)
Step-by-step Solution
Detailed explanation
\(C_p = \frac{5}{2} R\) \(C_p = \frac{5}{2} \times 8.3 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\) \(C_p = 20.75 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\)
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