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The reaction A+B to products is first or...

The reaction `A+B to` products is first order in each of the reactants.
(a) How does the rate of reaction change if the concentration of A is increased by factor 3 ?
(b) What is the change in the rate of reaction if the concentration of A is halved and concentration of B is doubled ?

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(a) `A+B to` Product
Rate = K [A] [B]
If concentration of A is increased by factor 3 then rate also increases 3 times.
(b) If concentration of A is halved and concentration of B is doubled then rate remains unchanged.
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