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Q 2636178072.     (a) A reaction is second order in A and first order in B.

(i) Write the differential rate equation.
(ii) How is the rate affected on increasing the concentration of A three times?
(iii) How is the rate affected when the concentrations of both A and B are doubled?

(b) A first order reaction takes 40 minutes for 30% decomposition. Calculate `t_(1//2)` for this reaction. (Given log 1.428 = 0.1548)

CBSE-12th 2013

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