Q51 · CSIR-NET Chemistry, December 2019

Paper: CSIR-NET December 2019 · Subject: Physical Chemistry · Chapter: Surface Chemistry · Topic: Catalysis Surface · Marks: 2 · Difficulty: Hard

The order of a surface catalyzed unimolecular reaction, at very low and very high pressures of the reactant, would be, respectively

(a)0,0

(b)1,0

(c)0,1

(d)1,1

Answer

Answer: B ✓ checked by 4AB · confidence high

Explanation

Langmuir–Hinshelwood unimolecular: rate ∝ θ = Kp/(1+Kp) — first order at low p, zero order at high p (b).

Study loop for Surface Chemistry