a reaction is second order with respect to a reactant .How the rate of the reaction be affected if concentration of the reactant is reduced to half?
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A reaction is second order with respect to a reactant.
Rate =k[A]
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(i) If the concentration of the reactant is doubled, the rate of reaction becomes 4 times .
(ii) If the concentration of the reactant is reduced to half, the rate of reaction becomes one fourth.
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Answer: One-fourth
Explanation:Usually for a second order reaction
Rate=k[A^2]
If the concentration [A] changes to [1/2A] then
Rate=k[1/2A]^2
Rate=1/4k A^2
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