The decomposition of NH3 on Mo surface follows Langmuir-Hinshelwood mechanism. The decomposition was carried out at low pressures. The initial pressure of NH3 was 10-2 torr. The pressure of NH3 was reduced to 10-4 torr in 10 minutes. The rate constant of decomposition of NH3 is:

ABC26PH0021 · Chemical Kinetics

Subject: Physical Chemistry · Chapter: Chemical Kinetics · Topic: Rate Laws Order · Exam: CSIR-NET DEC 2012 · Marks: 2 · Difficulty: Hard

The decomposition of $\mathrm{NH_3}$ on Mo surface follows Langmuir-Hinshelwood mechanism. The decomposition was carried out at low pressures. The initial pressure of $\mathrm{NH_3}$ was $10^{-2}$ torr. The pressure of $\mathrm{NH_3}$ was reduced to $10^{-4}$ torr in $10$ minutes. The rate constant of decomposition of $\mathrm{NH_3}$ is:

(a)$9.9 \times 10^{-4}\,\mathrm{torr\,min^{-1}}$

(b)$0.4606\,\mathrm{min^{-1}}$

(c)$9.9 \times 10^{-3}\,\mathrm{torr\,min^{-1}}$

(d)$0.693\,\mathrm{min^{-1}}$

Answer

Answer (as printed): B

Explanation

No explanation was printed for this question.

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