The SI unit of universal gas constant (R) is

Watt K^-1 mol^-1

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Newton K^-1 mol^-1

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Joule K^-1 mol^-1

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Erg K^-1 mol^-1

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Solution

The correct option is C Joule K^-1 mol^-1
PV = nRT $\Rightarrow$ R = $\frac{P V}{n T}$ = $\frac{J o u l e}{m o l e \times K e l v i n} = J K^{- 1} m o l^{- 1}$

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Expressed in SI units, when the universal gas constant (R) is divided by Avogadro’s number (N), we get:

The value of R (Universal gas constant) in SI unit is

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