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Chemistry · 2026 · 1 mark
CBSE 2026 · Region 4 · Set 1 · Q10
The rate of a first order reaction is 5 · 6 × 10^-4 mol L^-1 s^-1, when the concentration of reactant is 0.2 mol L^-1. The rate constant ' k ' is:
The rate of a first order reaction is $\displaystyle 5 \cdot 6 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$, when the concentration of reactant is $\displaystyle 0.2 \mathrm{~mol} \mathrm{~L}^{-1}$. The rate constant ' k ' is :
Official answer
(D)
$\displaystyle 2.8 \times 10^{-3} \mathrm{~s}^{-1}$
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