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Order of Reaction

Units for the...

Question

Units for the rate constant of first order reaction is:

s e c^{- 1}

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m o l e s l i t^{- 1}

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l i t . m o l e^{- 1}

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m o l e s^{3} l i t^{- 1} s e c^{- 1}

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Solution

The correct option is A $s e c^{- 1}$
First-order
$A \to product$

$r a t e = k [A]$

$k = \frac{r a t e}{[A]}$
$= \frac{concentration}{time . concentration} (unit)$
$= \frac{1}{s e c}$
${unit of k =sec}^{- 1}$
Hence, the correct option is $A$

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