NEET Chemistry Chemical Kinetics Questions Solved

NEET - 2007

In a first order reaction A               B, if k is rate constant and initial concentration of the reactant A is 0.5 M then the half-life is :

(a) 0.6930.5k

(b) log 2k

(c) log 2k0.5

(d) ln 2k

(d) For first order reaction.

k=2.303tlogaa-x                t12=2.303klogaa-a2                      = 2.303klog2or                           ln 2k

 

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