NEET2023Chemistry-Effect of Concentration on Rate
NEET 2023 Chemistry Rate Laws MCQ Question
Type: MCQ-conceptual-Medium-Class 12
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
A
increase by a factor of six.
B
increase by a factor of nine.
C
increase by a factor of three.
D
decrease by a factor of nine.
Correct Answer
Option B
Detailed Explanation
The rate law is rate = k[A]²[B]. If [A] is tripled, the rate increases by 3² = 9 times.
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