Question
The best method to purify impure acetone is
A.
\[C{{H}_{3}}COC{{H}_{3}}+HCl\to \] \[C{{H}_{3}}\underset{\begin{smallmatrix}
| \\
Cl
\end{smallmatrix}}{\overset{\begin{smallmatrix}
\,\,\,\,OH \\
|
\end{smallmatrix}}{\mathop{-C-}}}\,C{{H}_{3}}\xrightarrow{\text{heat}}\] \[C{{H}_{3}}COC{{H}_{3}}\]
B.
\[C{{H}_{3}}COC{{H}_{3}}+NaHS{{O}_{3}}\to \] \[C{{H}_{3}}\underset{\begin{smallmatrix}
| \\
\,\,\,C{{H}_{3}}
\end{smallmatrix}}{\overset{\begin{smallmatrix}
\,\,\,\,OH \\
|
\end{smallmatrix}}{\mathop{-C-}}}\,S{{O}_{3}}Na\xrightarrow{N{{a}_{2}}C{{O}_{3}}}\] \[C{{H}_{3}}COC{{H}_{3}}\]
C.
\[C{{H}_{3}}COC{{H}_{3}}+HCN\to \] \[C{{H}_{3}}\underset{\begin{smallmatrix}
| \\
\,CN
\end{smallmatrix}}{\overset{\begin{smallmatrix}
\,\,\,\,OH \\
|
\end{smallmatrix}}{\mathop{-C-}}}\,C{{H}_{3}}\xrightarrow{HOH}\] \[C{{H}_{3}}COC{{H}_{3}}\]
D.
\[C{{H}_{3}}COC{{H}_{3}}+{{H}_{2}}S{{O}_{4}}\to \] \[\underset{\begin{smallmatrix}
| \\
\,\,\,\,\,\,\,\,\,OS{{O}_{3}}H
\end{smallmatrix}}{\overset{\begin{smallmatrix}
\,\,\,\,OH \\
|
\end{smallmatrix}}{\mathop{C{{H}_{3}}-C-C{{H}_{3}}}}}\,\xrightarrow{\text{heat}}C{{H}_{3}}COC{{H}_{3}}\]
Answer :
\[C{{H}_{3}}COC{{H}_{3}}+NaHS{{O}_{3}}\to \] \[C{{H}_{3}}\underset{\begin{smallmatrix}
| \\
\,\,\,C{{H}_{3}}
\end{smallmatrix}}{\overset{\begin{smallmatrix}
\,\,\,\,OH \\
|
\end{smallmatrix}}{\mathop{-C-}}}\,S{{O}_{3}}Na\xrightarrow{N{{a}_{2}}C{{O}_{3}}}\] \[C{{H}_{3}}COC{{H}_{3}}\]