1. What is the overall reaction? (b) What are the

Chapter , Problem 110AE

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The following mechanism has been proposed for the gas-phase reaction of chloroform $\left(\mathrm{CHCl}_{3}\right)$ and chlorine:

$step 1: \quad C l_{2}(g) \underset{k-1}{\stackrel{k}{\rightleftarrows}} 2 C l(g) (fast)$

$step 2: \quad \mathrm{Cl}(g)+\mathrm{CHCl}_{3}(g)_{\rightarrow}^{k_{2}} \mathrm{HCl}(g)+\mathrm{CCl}_{3}(g)( slow )$

$step 3: $\quad \mathrm{Cl}(\mathrm{g})+\mathrm{CCl}_{3}(\mathrm{~g}) \stackrel{k_{3}}{\rightarrow} \mathrm{CCl}_{4} \quad (fast)$

(a) What is the overall reaction?

(b) What are the intermediates in the mechanism?

(d) What is the rate-determining step?

(e) What is the rate law predicted by this mechanism? (Hint: The overall reaction order is not an integer.)

Equation Transcription:

$(CHC{l}_{3})$

$step\ 1:\ \ \ \ \ C{l}_{2}(g){\ }_{k-1}^{{\ }_{\leftarrow{}}^{{\ }_{\rightarrow{}}^{{k}_{1}}}}\ 2\ Cl(g)\ \ (fast)$

$step\ 2:\ \ \ Cl(g)+CHC{l}_{3}(g){\ }_{\rightarrow{}}^{{k}_{2}}HCl(g)+CC{l}_{3}(g)\ \ (slow)$

$step\ 3:\ \ \ Cl(g)+CC{l}_{3}(g){\ }_{\rightarrow{}}^{{k}_{3}}CC{l}_{4}\ \ \ (fast)$

Text Transcription:

(CHCl3)

step 1: \quad C l_2(g) \underset k-1\stackrelk \rightleftarrows 2 C l(g) (fast)

step 2: \quad Cl(g)+CHCl_3(g)_\rightarrow^k_2 HCl(g)+CCl_3(g)( slow )

step 3: \quad Cl(g)+CCl_3(g) \stackrel{k_3 \rightarrow CCl_4 \quad (fast)

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