Which of the following statements is incorrec | vedclass

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Question

(D) Option $D$ is incorrect. The correct decreasing order of melting point for these amines and ammonia is $(CH_3)_2NH > CH_3NH_2 > (CH_3)_3N > NH_3$.

Vedclass · Accepted Answer

The decreasing order of melting point is $NH_3 > (CH_3)_2NH > CH_3NH_2 > (CH_3)_3N$

Vedclass · Answer

(D) Option $D$ is incorrect. The correct decreasing order of melting point for these amines and ammonia is $(CH_3)_2NH > CH_3NH_2 > (CH_3)_3N > NH_3$. $NH_3$ has a lower melting point than the methylamines due to differences in hydrogen bonding and molecular weight. Option $A$ is correct as thermal stability of alkali metal hydroxides increases down the group. Option $B$ is correct as bond angles decrease with increasing lone pair-bond pair repulsions. Option $C$ is correct as $F_2$ has an anomalously low bond dissociation energy due to inter-electronic repulsions.

Which of the following statements is incorrect?

Similar Questions

Consider the following sequence of reactions:
$C_6H_5NH_2$ $\xrightarrow{NaNO_2, 0-5^{\circ}C} 'A'$ $\xrightarrow{N,N-\text{Dimethylaniline}} 'B'$
The product $B$ is

Arrange the following in increasing order of their basic strength:
$(i)$ $C_2H_5NH_2, C_6H_5NH_2, NH_3, C_6H_5CH_2NH_2$ and $(C_2H_5)_2NH$
$(ii)$ $C_2H_5NH_2, (C_2H_5)_2NH, (C_2H_5)_3N, C_6H_5NH_2$
$(iii)$ $CH_3NH_2, (CH_3)_2NH, (CH_3)_3N, C_6H_5NH_2, C_6H_5CH_2NH_2$

The incorrect statement regarding the reaction given below is:

In the reaction shown below,the major product$(s)$ formed is/are:

$9.3 \ g$ of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product '$P$'. The mass of product '$P$' obtained is $26.4 \ g$. The percentage yield is $......... \ \%$.

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