Decomposition of A is a first ... | Chemical Kinetics

JEE MAIN 2026

21-1-2026 S2

Question

Decomposition of A is a first order reaction at $\mathrm{T}(\mathrm{K})$ and is given by $\mathrm{A}(\mathrm{g}) \longrightarrow \mathrm{B}(\mathrm{g})+\mathrm{C}(\mathrm{g})$. In a closed 1 L vessel, 1 bar $\mathrm{A}(\mathrm{g})$ is allowed to decompose at $\mathrm{T}(\mathrm{K})$. After 100 minutes, the total pressure was 1.5 bar. What is the rate constant $\left(\right.$ in $\left.\min ^{-1}\right)$ of the reaction? $(\log 2=0.3)$

Select the correct option:

$6.9 \times 10^{-1}$

$6.9 \times 10^{-3}$

$6.9 \times 10^{-2}$

$6.9 \times 10^{-4}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution