Question

7 Which of the following is a likely mechanism for the reaction (CH$_3$)$_3$CCI + OH$^-$\rightarrow$ (CH$_3$)$_3$COH + Cl$^-$, which is first order in (CH$_3$)$_3$CCI and first order overall? A)A one-step mechanism involving a transition state that contains two hydroxide ions "attached" to the carbon atom of (CH$_3$)$_3$CI B)A one-step mechanism involving a transition state that has a carbon partially bonded to both chlorine and oxygen C)A two-step mechanism in which the chlorine leaves (CH$_3$)$_3$CI in a slow step, followed by rapid attack of the intermediate by the hydroxide ion D)A two-step mechanism in which the chlorine leaves (CH$_3$)$_3$CI in a rapid step, followed by the slow attack of the intermediate by the hydroxide ion 8 Below is a possible mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution. What is the overall reaction equation for this process? H$^+$ + H$_2$O$_2$ $\rightarrow$ H$_2$O$^+$--OH (rapid equilibrium) H$_2$O$^+$--OH + Br$^-$ $\rightarrow$ HOBr + H$_2$O (slow) HOBr + H$^+$ $\rightarrow$ Br$_2$ + H$_2$O (fast) A)2 H$^+$ + H$_2$O$_2$ + Br$^-$ + HOBr $\rightarrow$ H$_2$O$^+$--OH + Br$_2$ + H$_2$O B) H$_2$O$^+$--OH + H$^+$ + Br$^-$ $\rightarrow$ Br$_2$ + H$_2$O C)2 H$^+$ + 2 Br$^-$ + H$_2$O$_2$ $\rightarrow$ Br$_2$ + 2 H$_2$O D)2 H$_2$O$^+$--OH + 2 Br$^-$ $\rightarrow$ H$_2$O$_2$ + Br$_2$ + 2 H$_2$O

          7
Which of the following is a likely mechanism for the reaction (CH$_3$)$_3$CCI + OH$^-$\rightarrow$
(CH$_3$)$_3$COH + Cl$^-$, which is first order in (CH$_3$)$_3$CCI and first order overall?
A)A one-step mechanism involving a transition state that contains two hydroxide ions
"attached" to the carbon atom of (CH$_3$)$_3$CI
B)A one-step mechanism involving a transition state that has a carbon partially bonded to
both chlorine and oxygen
C)A two-step mechanism in which the chlorine leaves (CH$_3$)$_3$CI in a slow step, followed by
rapid attack of the intermediate by the hydroxide ion
D)A two-step mechanism in which the chlorine leaves (CH$_3$)$_3$CI in a rapid step, followed by
the slow attack of the intermediate by the hydroxide ion
8
Below is a possible mechanism for the oxidation of bromide ions by hydrogen peroxide in
aqueous acid solution. What is the overall reaction equation for this process?
H$^+$ + H$_2$O$_2$ $\rightarrow$ H$_2$O$^+$--OH (rapid equilibrium)
H$_2$O$^+$--OH + Br$^-$ $\rightarrow$ HOBr + H$_2$O (slow)
HOBr + H$^+$ $\rightarrow$ Br$_2$ + H$_2$O (fast)
A)2 H$^+$ + H$_2$O$_2$ + Br$^-$ + HOBr $\rightarrow$ H$_2$O$^+$--OH + Br$_2$ + H$_2$O
B) H$_2$O$^+$--OH + H$^+$ + Br$^-$ $\rightarrow$ Br$_2$ + H$_2$O
C)2 H$^+$ + 2 Br$^-$ + H$_2$O$_2$ $\rightarrow$ Br$_2$ + 2 H$_2$O
D)2 H$_2$O$^+$--OH + 2 Br$^-$ $\rightarrow$ H$_2$O$_2$ + Br$_2$ + 2 H$_2$O

7
Which of the following is a likely mechanism for the reaction (CH3)3CCI + OH^-→(CH3)3COH + Cl^-, which is first order in (CH3)3CCI and first order overall?
A)A one-step mechanism involving a transition state that contains two hydroxide ions
"attached" to the carbon atom of (CH3)3CI
B)A one-step mechanism involving a transition state that has a carbon partially bonded to
both chlorine and oxygen
C)A two-step mechanism in which the chlorine leaves (CH3)3CI in a slow step, followed by
rapid attack of the intermediate by the hydroxide ion
D)A two-step mechanism in which the chlorine leaves (CH3)3CI in a rapid step, followed by
the slow attack of the intermediate by the hydroxide ion
8
Below is a possible mechanism for the oxidation of bromide ions by hydrogen peroxide in
aqueous acid solution. What is the overall reaction equation for this process?
H^++ H2O2→H2O^+–OH (rapid equilibrium)
H2O^+–OH + Br^-→HOBr + H2O (slow)
HOBr + H^+→Br2+ H2O (fast)
A)2 H^++ H2O2+ Br^-+ HOBr→H2O^+–OH + Br2+ H2O
B) H2O^+–OH + H^++ Br^-→Br2+ H2O
C)2 H^++ 2 Br^-+ H2O2→Br2+ 2 H2O
D)2 H2O^+–OH + 2 Br^-→H2O2+ Br2+ 2 H2O

Added by Andr-S A.

Question

Please give Ace some feedback