01. Resonance
GENERAL ORGANIC CHEMISTRY

231702 Amongst the given cations, the most stable carbonium ion is

1 $\stackrel{+}{\mathrm{C}} \mathrm{H}_{3}$
2 $\left(\mathrm{CH}_{3}\right)_{3} \stackrel{+}{\mathrm{C}}$
3 $\mathrm{CH}_{3} \stackrel{+}{\mathrm{C}} \mathrm{H}_{2}$
4 $\left(\mathrm{CH}_{3}\right)_{2} \stackrel{+}{\mathrm{C}} \mathrm{H}$
GENERAL ORGANIC CHEMISTRY

231703 Arrange the following carboxylic acids in the decreasing order of the reactivities

1 B $>$ D $>$ A $>$ C
2 B $>$ A $>$ C $>$ D
3 A $>$ B $>$ C $>$ D
4 D $>$ C $>$ B $>$ A
GENERAL ORGANIC CHEMISTRY

231704 The ascending order of stability of the carbanion
$\mathrm{H}_{3} \mathrm{C}(\mathrm{P}), \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2}(\mathrm{Q}),\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C} \mathrm{H}(\mathrm{R})$ and
$\mathrm{H}_{2} \mathrm{C}-\mathrm{CH}=\mathrm{CH}_{2}(\mathrm{~S})$ is

1 $\stackrel{\ominus}{\mathrm{CH}_{3}} \rightarrow$ It is stable due to no any +I group
$\mathrm{C}_{6} \mathrm{H}_{5}-\stackrel{\ominus}{\mathrm{C}} \mathrm{H}_{2} \rightarrow$ It is more stable due to resonance it has resonating structure which increases the stability of molecule.
original image
It is stabilised by resonance hence it is more stable.
Hence, $\mathrm{R}<\mathrm{P}<\mathrm{S}<\mathrm{Q}$ is increasing order of stability of carbanion.
2 R $<$ P $<$ S $<$ Q
3 R $<$ P $<$ Q $<$ S
4 P $<$ R $<$ Q $<$ S
GENERAL ORGANIC CHEMISTRY

231706 Which is the most stable carbocation?

1 iso-propyl cation
2 triphenylmentylcation
3 ethyl cation
4 n-propyl cation#
GENERAL ORGANIC CHEMISTRY

231702 Amongst the given cations, the most stable carbonium ion is

1 $\stackrel{+}{\mathrm{C}} \mathrm{H}_{3}$
2 $\left(\mathrm{CH}_{3}\right)_{3} \stackrel{+}{\mathrm{C}}$
3 $\mathrm{CH}_{3} \stackrel{+}{\mathrm{C}} \mathrm{H}_{2}$
4 $\left(\mathrm{CH}_{3}\right)_{2} \stackrel{+}{\mathrm{C}} \mathrm{H}$
GENERAL ORGANIC CHEMISTRY

231703 Arrange the following carboxylic acids in the decreasing order of the reactivities

1 B $>$ D $>$ A $>$ C
2 B $>$ A $>$ C $>$ D
3 A $>$ B $>$ C $>$ D
4 D $>$ C $>$ B $>$ A
GENERAL ORGANIC CHEMISTRY

231704 The ascending order of stability of the carbanion
$\mathrm{H}_{3} \mathrm{C}(\mathrm{P}), \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2}(\mathrm{Q}),\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C} \mathrm{H}(\mathrm{R})$ and
$\mathrm{H}_{2} \mathrm{C}-\mathrm{CH}=\mathrm{CH}_{2}(\mathrm{~S})$ is

1 $\stackrel{\ominus}{\mathrm{CH}_{3}} \rightarrow$ It is stable due to no any +I group
$\mathrm{C}_{6} \mathrm{H}_{5}-\stackrel{\ominus}{\mathrm{C}} \mathrm{H}_{2} \rightarrow$ It is more stable due to resonance it has resonating structure which increases the stability of molecule.
original image
It is stabilised by resonance hence it is more stable.
Hence, $\mathrm{R}<\mathrm{P}<\mathrm{S}<\mathrm{Q}$ is increasing order of stability of carbanion.
2 R $<$ P $<$ S $<$ Q
3 R $<$ P $<$ Q $<$ S
4 P $<$ R $<$ Q $<$ S
GENERAL ORGANIC CHEMISTRY

231706 Which is the most stable carbocation?

1 iso-propyl cation
2 triphenylmentylcation
3 ethyl cation
4 n-propyl cation#
GENERAL ORGANIC CHEMISTRY

231702 Amongst the given cations, the most stable carbonium ion is

1 $\stackrel{+}{\mathrm{C}} \mathrm{H}_{3}$
2 $\left(\mathrm{CH}_{3}\right)_{3} \stackrel{+}{\mathrm{C}}$
3 $\mathrm{CH}_{3} \stackrel{+}{\mathrm{C}} \mathrm{H}_{2}$
4 $\left(\mathrm{CH}_{3}\right)_{2} \stackrel{+}{\mathrm{C}} \mathrm{H}$
GENERAL ORGANIC CHEMISTRY

231703 Arrange the following carboxylic acids in the decreasing order of the reactivities

1 B $>$ D $>$ A $>$ C
2 B $>$ A $>$ C $>$ D
3 A $>$ B $>$ C $>$ D
4 D $>$ C $>$ B $>$ A
GENERAL ORGANIC CHEMISTRY

231704 The ascending order of stability of the carbanion
$\mathrm{H}_{3} \mathrm{C}(\mathrm{P}), \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2}(\mathrm{Q}),\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C} \mathrm{H}(\mathrm{R})$ and
$\mathrm{H}_{2} \mathrm{C}-\mathrm{CH}=\mathrm{CH}_{2}(\mathrm{~S})$ is

1 $\stackrel{\ominus}{\mathrm{CH}_{3}} \rightarrow$ It is stable due to no any +I group
$\mathrm{C}_{6} \mathrm{H}_{5}-\stackrel{\ominus}{\mathrm{C}} \mathrm{H}_{2} \rightarrow$ It is more stable due to resonance it has resonating structure which increases the stability of molecule.
original image
It is stabilised by resonance hence it is more stable.
Hence, $\mathrm{R}<\mathrm{P}<\mathrm{S}<\mathrm{Q}$ is increasing order of stability of carbanion.
2 R $<$ P $<$ S $<$ Q
3 R $<$ P $<$ Q $<$ S
4 P $<$ R $<$ Q $<$ S
GENERAL ORGANIC CHEMISTRY

231706 Which is the most stable carbocation?

1 iso-propyl cation
2 triphenylmentylcation
3 ethyl cation
4 n-propyl cation#
GENERAL ORGANIC CHEMISTRY

231702 Amongst the given cations, the most stable carbonium ion is

1 $\stackrel{+}{\mathrm{C}} \mathrm{H}_{3}$
2 $\left(\mathrm{CH}_{3}\right)_{3} \stackrel{+}{\mathrm{C}}$
3 $\mathrm{CH}_{3} \stackrel{+}{\mathrm{C}} \mathrm{H}_{2}$
4 $\left(\mathrm{CH}_{3}\right)_{2} \stackrel{+}{\mathrm{C}} \mathrm{H}$
GENERAL ORGANIC CHEMISTRY

231703 Arrange the following carboxylic acids in the decreasing order of the reactivities

1 B $>$ D $>$ A $>$ C
2 B $>$ A $>$ C $>$ D
3 A $>$ B $>$ C $>$ D
4 D $>$ C $>$ B $>$ A
GENERAL ORGANIC CHEMISTRY

231704 The ascending order of stability of the carbanion
$\mathrm{H}_{3} \mathrm{C}(\mathrm{P}), \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2}(\mathrm{Q}),\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C} \mathrm{H}(\mathrm{R})$ and
$\mathrm{H}_{2} \mathrm{C}-\mathrm{CH}=\mathrm{CH}_{2}(\mathrm{~S})$ is

1 $\stackrel{\ominus}{\mathrm{CH}_{3}} \rightarrow$ It is stable due to no any +I group
$\mathrm{C}_{6} \mathrm{H}_{5}-\stackrel{\ominus}{\mathrm{C}} \mathrm{H}_{2} \rightarrow$ It is more stable due to resonance it has resonating structure which increases the stability of molecule.
original image
It is stabilised by resonance hence it is more stable.
Hence, $\mathrm{R}<\mathrm{P}<\mathrm{S}<\mathrm{Q}$ is increasing order of stability of carbanion.
2 R $<$ P $<$ S $<$ Q
3 R $<$ P $<$ Q $<$ S
4 P $<$ R $<$ Q $<$ S
GENERAL ORGANIC CHEMISTRY

231706 Which is the most stable carbocation?

1 iso-propyl cation
2 triphenylmentylcation
3 ethyl cation
4 n-propyl cation#