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Q 2626067871.     (a) For a reaction A + B ⟶ P, the rate is given by
Rate `= k [A] [B]^2`
(i) How is the rate of reaction affected if the concentration of B is doubled?
(ii) What is the overall order of reaction if A is present in large excess?

(b) A first order reaction takes 23.1 minutes for 50% completion. Calculate the time required for 75% completion of this reaction.
(log 2 = 0.301, log 3 = 0.4771, log 4 = 0.6021)

CBSE-12th 2015

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