Question

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. 44811
• B. 44747
• C. 44780
• D. 44688

Answer 1

Answer: (B)

44747

Answer 2

$C _{ P }=\frac{7}{2} R$
$\Rightarrow C _{ V }= C _{ P }- R =\frac{5}{2} R$
$\Rightarrow \gamma=\frac{ C _{ P }}{ C _{ V }}$
$=\frac{7}{5}$