ABC26PH0361 · Concentration B B

Subject: Physical Chemistry · Chapter: Concentration B B · Topic: Concentration B B – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Hard

Consider the reaction, $\mathrm{H}_{2}+\mathrm{C}_{2}\mathrm{H}_{4} \rightarrow \mathrm{C}_{2}\mathrm{H}_{6}$ The molecular diamesters of $\mathrm{H}_{2}$ and $\mathrm{C}_{2}\mathrm{H}_{4}$ are $1.8\,\mathrm{\AA}$ and $3.6\,\mathrm{\AA}$ respectively. The pre-exponential factor in the rate constant calculated using collision theory in $\mathrm{m^{3}\,mol^{-1}\,s^{-1}}$ is approximately. (For this reaction at 300 K,)

\[ \left(\dfrac{8\mathrm{k}_{\mathrm{B}}\mathrm{T}}{\pi\mu}\right)^{1/2} \mathrm{N}_{\mathrm{A}} = 1.11\times 10^{27}\,\mathrm{m\,mol^{-1}\,s^{-1}} \]

, where the symbols have their usual meanings)

(a)$2.5 \times 10^{8}$

(b)$2.5 \times 10^{14}$

(c)$9.4 \times 10^{17}$

(d)$9.4 \times 10^{23}$

Answer

Answer (as printed): A

Explanation

No explanation was printed for this question.

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