For a reaction of order n , the unit of the rate constant is :

For a reaction of order

n,

the unit of the rate constant is :

${mol}^{1 - n} L^{1 - n} s$
${mol}^{1 - n} L^{2 n} s^{- 1}$
${mol}^{1 - n} L^{n - 1} s^{- 1}$
${mol}^{1 - n} L^{1 - n} s^{- 1}$

Solution

Rate

= k [A]^{n}

comparing units

\frac{(mol / ℓ)}{\sec} = k {(\frac{mol}{ℓ})}^{n}

\Rightarrow k = {mol}^{(1 - n)} ℓ^{(n - 1)} s^{- 1}

Asked in: JEE Main 2021 (27 Jul Shift 1)

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