Reactant ‘A’ underwent a decomposition reaction. The concentration of ‘A’ was measured periodically and recorded in the table given below:

Based on the above data, predict the order of the reaction and write the expression for the rate law.

Question

For first order reaction, rate constant at $27^{\circ} C$ and $t^{\circ} C$ are $1.5 \times 10^3$ and $4.5 \times 10^3$ respectively. If activation energy of the reaction is $60 \text{ kJmol}^{-1}$, then ($R = 8.3 \text{ Jmol}^{-1}K^{-1}$) $\ln 3 = 1.1$
Find temperature 't' (in $^{\circ} C$).

Answer 1

The reaction order can be determined using integrated rate law equations for various orders.
Plotting concentration versus time data allows for the determination of reaction order.
A linear plot of ln[A] against time signifies a first-order reaction.
The provided data confirms the reaction is first-order.
Consequently, the rate law is: \[ \text{Rate} = k[A] \]

Reactant ‘A’ underwent a decomposition reaction. The concentration of ‘A’ was measured periodically and recorded in the table given below:

Based on the above data, predict the order of the reaction and write the expression for the rate law.

Show Hint

Solution and Explanation

Top Questions on Chemical Kinetics

Questions Asked in CBSE Class XII exam

Reactant ‘A’ underwent a decomposition reaction. The concentration of ‘A’ was measured periodically and recorded in the table given below: Based on the above data, predict the order of the reaction and write the expression for the rate law.

Show Hint

Solution and Explanation

Top Questions on Chemical Kinetics

Questions Asked in CBSE Class XII exam

Reactant ‘A’ underwent a decomposition reaction. The concentration of ‘A’ was measured periodically and recorded in the table given below:

Based on the above data, predict the order of the reaction and write the expression for the rate law.