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STD 12 - 3. Chemical kinetics — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 3. Chemical kinetics4 Marks
MCQ
The unit of rate constant for a zero order reaction is
  • ✓
    $mol\, L^{-1}\, s^{-1}$
  • B
    $L \,mol^{-1} \,s^{-1}$
  • C
    $L^2\, mol^{-2}\, s^{-1}$
  • D
    $s^{-1}$
✓

Answer

Correct option: A.
$mol\, L^{-1}\, s^{-1}$
a
The rate law expression for the zero order reaction is Rate $= k [ A ]^0$

$mol\,L ^{-1}\, \sec ^{-1}= k \times\left( mol\,L ^{-1}\right)^0$

Unit of $k = mol\, L ^{-1}\, sec ^{-1}$

The unit of rate constant for a zero order reaction is $mol\, L ^{-1} \,s ^{-1}$.

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