In a chemical reaction, represented by as shown in the bellow figure, it is observed that the (i) Rate of reaction increases by a factor of 4 on doubling the concentration of the reactant. (ii) Rate of reaction increases by a factor of 9 on trebling the concentration of the reactant. Then the rate of the reaction is proportional to(where, CA = concentration of the reactant)_____________________?
Correct answer: B. CA2
- A. CA
- B. CA2
- C. CA3
- D. CA4
Explanation
If r is proportional to C_A^n, doubling concentration changes the rate by 2^n. Since 2^n = 4 and 3^n = 9, n is 2 and the rate is proportional to C_A².
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