Subject: Physical Chemistry · Chapter: Chemical Kinetics · Topic: Rate Laws Order · Exam: NET DEC 2015 · Marks: 2 · Difficulty: Hard
The first order rate constant for a unimolecular gas phase reaction A → products that follows Lindemann mechanism is $2.0 \mathrm{s}^{-1}$ at $\mathrm{p}_{\mathrm{A}}=1 \mathrm{atm}$ and $4.0 \mathrm{s}^{-1}$ at $\mathrm{p}_{\mathrm{A}}=2 \mathrm{atm}$. The rate constant for the activation step is
(a)$1.0 \mathrm{atm}^{-1} \mathrm{s}^{-1}$
(b)$2.0 \mathrm{atm}^{-1} \mathrm{s}^{-1}$
(c)$4.0 \mathrm{atm}^{-1} \mathrm{s}^{-1}$
(d)$8.0 \mathrm{atm}^{-1} \mathrm{s}^{-1}$
Answer
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