JEE Main 2026 Chemistry question
First order gas phase reaction A→B+C. pᵢ=initial pressure of gas A, pₜ=total pressure of the reaction mixture at time t. Expression of rate constant (k) is
Answer: (A)
Solution
If p is the pressure of A reacted, pₜ=pᵢ+p, so =pᵢ−p=2pᵢ−pₜ. First-order: k=(1/t)ln(pᵢ/.