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A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is (i) doubled (ii) reduced to half ?

A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is (i) doubled (ii) reduced to half ?

Grade:8

2 Answers

Gaurav
askIITians Faculty 164 Points
7 years ago
Let the reaction is A --> Product
Rate = k[A]2

(I) If conc. of A is doubled
R’ = K[2A]2 = 4K[A]2 = 4R
So rate of reaction will increae four times.
(ii) If conc, of reactants is reduced to half
R’ = K[1/2A]2= 1/4K[A]2= R/4
Rate of reaction will reduced to one fourth of the initial rate.
ankit singh
askIITians Faculty 614 Points
one year ago
A reaction is of second order with respect to a reactant. How is its rate affected if the concentration of the reactant is (i) doubled (ii) reduced to half? Therefore, the rate of the reaction would increase by 4 times.

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