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The half-life for a zero order reaction having 0.02 M initial concentration of reactant is 100 s. The rate constant (in mol L–1 s–1) for the reaction is 

(1) 1.0 × 10–2 

(2) 1.0 × 10–4 

(3) 2.0 × 10–4 

(4) 2.0 × 10–3

Chemical kinetics, integrated rate equations

1 Answer

Best answer

Ans: (2) 1.0 × 10–4

Sol. For zero order reaction 

$t_½={a\over2k}\implies k={a\over2t_½}$

$k={0.02\over2\times100}=1.0\times10^{-4}\ mol L^{-1}s^{-1}$

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