1.

A reaction is first order in A and second order in B. (i) Write differential rate equation. (ii) How is the rate affected on increasing the concentration of B three times ? (iii) How is the rate affected when concentration of both A and B is doubled ?

Answer»

Solution :(i) `(DX)/(DT)=k[A][B]^(2).`
(ii) Rate `=k" ab"^(2)`
If [B] is TRIPLED, Rate `=ka(3" b")^(2)=9" k ab"^(2)=9" times."`
(iii) If both [A] and [B] are DOUBLED, Rate `=k(2" a")(2" b")^(2)=8" k ab"^(2)=8" times."`


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