Exhibit 18-3 the Following Question(s) Pertain to the Reaction of Propene

question 24

Multiple Choice

Exhibit 18-3 The following question(s) pertain to the reaction of propene (C3CHCH2) with hydrochloric acid. $\mathrm{HCl}+\mathrm{C}_{3} \mathrm{CHCH}_{2} \leftrightarrows \mathrm{CH}_{3} \mathrm{CHClCH}_{3}$ A proposed mechanism for this chemical reaction is $\begin{array}{ll}\mathrm{HCl}+\mathrm{HCl} \leftrightarrows \mathrm{H}_{2} \mathrm{Cl}_{2}& \text { (fast, equilibrium) } \\\mathrm{HCl}+\mathrm{C}_{3} \mathrm{CHCH}_{2} \leftrightarrows \mathrm{CH}_{3} \mathrm{CHClCH}_{3}{ }^{*} & \text { (fast, equilibrium) } \\\mathrm{CH}_{3} \mathrm{CHClCH}_{3}{ }^{*}+\mathrm{H}_{2} \mathrm{Cl}_{2} \rightarrow \mathrm{CH}_{3} \mathrm{CHClCH}_{3} \rightarrow 2 \mathrm{HCl} & \text { (slow) }\end{array}$

Refer to Exhibit 18-3. If the first step were the slow step, what would be the predicted order of the reaction with respect to propene?

• A) 0
• B) 1
• C) 2
• D) Experimental data required to answer this question
• E) none of the above

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