Question

15. For a gas, the difference between the two
specific heats is 4150J Kg K-l and the ratio
of specific heats is 1.4. What is the specific
heat of the gas at constant volume in
J Kg- K-1?
1)8475 2) 5186 3)1660 45 10375​

Answer 1

Answer:

We know that,

C₁ − C₂ = 4150J (Kg K)⁻¹  -------- (1)

(Consider C₁ as specific heat at constant pressure and C₂ as specific heat at specific heat at constant volume)

C₁/C₂ = 1.4 ⇒ C₁ = 1.4*C₂

1.4*C₂ - C₂ = 4150 (Kg K)⁻¹ from equation (1)

0.4*C₂ = 4150 (Kg K)⁻¹

From this we get C₂ = 4150/0.4 = 10375 (Kg K)⁻¹ = specific heat at constant volume.

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