1.

For a first order reaction A toproduct the rate of reaction at [A] = 0.2 mol l^(-1) is 1.0 xx 10^(-2) "min"^(-1) . The half life period for the reaction is

Answer»

832 s
440 s
416 s
13.86 s

Solution :r = K [REACTANT] `"" therefore k = (1.0 XX 10^(-2))/(0.2) = 0.05`
`t_(1//2) = (0.693)/(0.05)` = 13.86 MINT = `13.86 xx 60 = 831.6` sec .


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