InterviewSolution
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InterviewSolution
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The order of reaction is an experimentally determined quanity. It may be zero, poistive, negative, or fractional. The kinetic equation of `nth` order reaction is`k xx t = (1)/((n-1))[(1)/((a-x)^(n-1)) - (1)/(a^(n-1))]` …(i) Half life of `nth` order reaction depends on the initial concentration according to the following relation: `t_(1//2) prop (1)/(a^(n-1))` ...(ii) The unit of the rate constant varies with the order but general relation for the unit of `nth` order reaction is Units of `k = [(1)/(Conc)]^(n-1) xx "Time"^(-1)` ...(iii) The differential rate law for `nth` order reaction may be given as: `(dX)/(dt) = k[A]^(n)` ...(iv) where `A` denotes the reactant. The unit of rate and rate constant are same forA. Zero order reactionB. First order reactionC. Second order reactionD. Half order reaction |
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Answer» Correct Answer - A For zero order reaction `(dx)/(dt) k[A]^(0) = k` `:.` Units of rate `= mol L^(-1) time^(-1)` Unit of rate constant `= mol L^(-1) time^(-1)` |
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