The molar specific heats of an ideal gas at constant pressure and volume are denoted by C_P and C_V respectively. If $straight gamma space equals space straight C subscript straight P over straight C subscript straight V$ and R is the universal gas constant, then C_V is equal to

$fraction numerator 1 plus straight gamma over denominator 1 minus straight gamma end fraction$
$fraction numerator straight R over denominator straight gamma space minus 1 end fraction$
$fraction numerator left parenthesis straight gamma minus 1 right parenthesis over denominator straight R end fraction$
$γR$

Solution

fraction numerator straight R over denominator straight gamma space minus 1 end fraction

The value of C_v = $fraction numerator straight R over denominator straight gamma space minus 1 end fraction$

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