The rate of a reaction increases sixteen times when the ...

CBSE Class 12 Chemistry 2024 All Sets Solved Paper

Question : 8 of 16

Marks: +1, -0

The rate of a reaction increases sixteen times when the concentration of the reactant increases four times. The order of the reaction is

Solution:

Let the reaction be A → products
Differential rate law is

{Rate = k[A]^x}

{Rate _1= k[a]^x}

{Rate _2= k[4a]^x}

Thus,

{\;{Rate_2}/{Rate_1} = ( {4a}/{a}) ^x}

16 = (4)^x

Taking log of both sides

\log 16 = x \log 4

\log 2^4 = x \log 2^2

4\log 2 = 2x \log 2

x = \;{4}/{2} = 2

Go to Question:

Prev Question

Next Question