Question

The $SI$ unit of universal gas constant $(R)$ is

• A. $W{K}^{-1}mo{l}^{-1}$
• B. $N{K}^{-1}mo{l}^{-1}$
• C. $J{K}^{-1}mo{l}^{-1}$
• D. $erg{K}^{-1}mo{l}^{-1}$

Answer 1

Answer: (C)

$PV=nRT$
$\Rightarrow R=\frac{PV}{nT}$
$=\frac{joule}{mole\times kelvin}$
$=J{K}^{-1}mo{l}^{-1}$