MCQ
Which acid has least $p{K_a}$ value
- ✓$C{l_3}C.COOH$
- B$C{l_2}CH.COOH$
- C$Cl.C{H_2}COOH$
- D$C{H_3}COOH$
✓
Answer
Correct option: A.
$C{l_3}C.COOH$
a
(a) $(C{l_3}C - COOH)$ Trichloroacetic acid has least $pK_a$ value and is most acidic.
(a) $(C{l_3}C - COOH)$ Trichloroacetic acid has least $pK_a$ value and is most acidic.
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The $IUPAC$ name of $\begin{array}{*{20}{c}}
{C{H_2} - C = CH - C{H_2}OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,Cl\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$ is
→{C{H_2} - C = CH - C{H_2}OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,Cl\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$ is
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