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Consider the reaction, 2A + B to Produc...

Consider the reaction, `2A + B to` Products
When concentrations of B alone was doubled, the half-life did not charge. When the concentrations of A alone was doubled, the rate increased by two times. The unit of rate constant for this reaction is

A

`s^(-1)`

B

`L mol s^(-1)`

C

no unit

D

`mol^(-1) s^(-1)`

Text Solution

Verified by Experts

In the reaction `2A + B rarr` Products, When concentration of B is doubled, the half-life did not change, hence the reaction is of first with respect to B because half-life is independent f concentration for first-order reaction `(t_(1//2) =0.693//k)`. When concentration of A is doubled, the reaction rate is doubled, hence the reaction is of first order with respect to A. So, the overall order is 1+1 =2 and the units of rate constant for a second order reaction are L `mol^(-1)s^(-1)`.
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