1.

In the reaction 2A + B to Products, the order w.r.t. A is found to be one and w.r.t. B equal to 2. Concentration of A is doubled and that of B is halved, the rate of reaction will be

Answer»

DOUBLED
halved
remain UNAFFECTED
four TIMES

Solution :`R_(1) = K [A] [B]^(2) "" …. (i)`
`R_(2) = k [2A] [ (1)/(2) B]^(2) "" … (ii)`
`therefore (R_(2))/(R_(1)) = (k[2A] [(1)/(2) B]^(2))/(k [A] [B]^(2))= 2 XX (1)/(4) = (1)/(2)`
`therefore R_(2) = (1)/(2) R_(1)`


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