Kinetic Theory - Result Question 31

31. The molar specific heat at constant pressure of an ideal gas is (7/2)R. The ratio of specific heat at constant pressure to that at constant volume is

(a) 8/7

(b) 5/7

(c) 9/7

(d) 7/5

[2006]

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Answer:

Correct Answer: 31. (d)

Solution:

(d) CP=72R;CV=CPR=72RR=52R

CPCV=7/2R5/2R=75



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