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JEE · NEET Previous Year Question

$The rate law for the decomposition of hydrogen iodide is - \frac{d [ HI ]}{dt} = k [HI]^{2} . The units of rate constant k are$

Topic: JEE PYQ

Answer: A. Full step-by-step solution below.

A $L mol^{- 1} s^{- 1}$
B $L^{- 1} mol s^{- 1}$
C $L^{2} mol^{- 2} s^{- 1}$
D $L^{1/2} mol^{- 1/2} s^{- 1}$

Correct answer: A

Solution

(a) From the rate law, units = \frac{( mol L ^{- 1} s ^{- 1} )}{( mol L ^{- 1} ) ^{2}} = L mol^{- 1} s^{- 1}

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