MCQ
Which amongst the following is the strongest acid?
- A$CHBr_3$
- B$CHI_3$
- ✓$CH(CN)_3$
- D$CHCl_3$
✓
Answer
Correct option: C.
$CH(CN)_3$
c
$CH{\left( {CN} \right)_3} \rightleftharpoons \mathop C\limits^ - {\left( {CN} \right)_3} + {H^ + }$
$CH{\left( {CN} \right)_3} \rightleftharpoons \mathop C\limits^ - {\left( {CN} \right)_3} + {H^ + }$
Negative charge of the conjugate base $\mathop C\limits^ - {\left( {CN} \right)_3}$ in extensively delocalized through the $C \equiv N$ group.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Correct order of stability is
How many stereoisomers does this molecule have
→$CH_3CH=CHCH_2CH(Br)CH_3$
Which is helpful in the formation of ionic bond
The most unlikely representation of resonance structures of $p-$ nitrophenoxide ion is
→The ratio of number of water molecules in Mohr's salt and potash alum is $....\,\times 10^{-1}$
→For the chemical reaction $X\, \rightleftharpoons \,Y,$ the standard reaction Gibbs energy depends on temperature $T$ (in $K$ ) as
→${\Delta _r}{G^o}$ (in $kJ\,mol^{-1}$) $=120-\frac {3}{8}\,T$
The major component of the reaction mixture at $T$ is
If $m$ and $e$ are the mass and charge of the revolving electron in the orbit of radius $r$ for hydrogen atom, the total energy of the revolving electron will be
→Transition state 2 is structurally most likely as:
Consider the following statements Of these statements
→$(I)\,C{H_3}O\mathop C\limits^ \oplus {H_2}$ is more stable than $C{H_3}\mathop C\limits^ \oplus {H_2}$
$(II)\,M{e_2}\mathop C\limits^ \oplus H$ is more stable than $C{H_3}C{H_2}\mathop C\limits^ \oplus {H_2}$
$(III)\,C{H_2} = CH - \mathop C\limits^ \oplus {H_2}$ is more stable than $C{H_3}C{H_2}\mathop C\limits^ \oplus {H_2}$
$(IV)\,C{H_2} = \mathop C\limits^ \oplus H$ is more stable than $C{H_3}\mathop C\limits^ \oplus {H_2}$
The heat of solution of anhydrous $\mathrm{CuSO}_4$ and $\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}$ are $-70 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and $+12 \mathrm{~kJ} \mathrm{~mol}^{-1}$ respectively.
→The heat of hydration of $\mathrm{CuSO}_4$ to $\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}$ is $-\mathrm{xkJ}$. The value of $\mathrm{x}$ is. . . . . . .