Which one of the following statements is true concerning the ratio of the molar heat capacities Cp/Cv for an ideal gas?
A) The ratio is always less than 1. D) The ratio is always 1.
B) The ratio is sometimes less than 1. E) The ratio is always greater than 1.
C) The ratio is sometimes greater than 1.
According to the Mayer's formula the relation between
and
is
given by-

-------------(1)
Now the ratio-
(using equation (1))



It means that the ratio is always greater than 1.
So option E is correct.
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