For a certain reaction, the rate = k[A]^2[B] . When the initial concentration of A is tripled keeping concentration of B constant, the initial rate wo - Chemistry MCQ NEET 2023 2026 | ExamTest.live

easyMCQNEET 20232026Chemistry

1 mark

For a certain reaction, the rate = k [A]^{2} [B] . When the initial concentration of A is tripled keeping concentration of B constant, the initial rate would:

Solution & Step-by-step Explanation

Rate r_{1} = k [A]^{2} [B] New concentration [A]^{'} = 3 [A] .New rate r_{2} = k (3 [A])^{2} [B] = k (9 [A]^{2}) [B] $ r_{2} = 9 \times (k [A]^{2} [B]) = 9 r_{1} $ The rate increases by a factor of nine.

Try it yourself before checking the explanation above.

For a certain reaction, the rate = k [A]^{2} [B] . When the initial concentration of A is tripled keeping concentration of B constant, the initial rate would:

Decrease by a factor of nine

Increase by a factor of six

Increase by a factor of nine

Increase by a factor of three

Practice with timed mock tests and track your performance across Chemistry.