Arrange the following compounds in decreasing | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The basic strength of substituted anilines depends on the nature of the substituent group attached to the benzene ring. Electron-donating groups $

Vedclass · Accepted Answer

$iv > i > iii > ii$

Vedclass · Answer

(A) The basic strength of substituted anilines depends on the nature of the substituent group attached to the benzene ring. Electron-donating groups $(EDG)$ increase basic strength by increasing electron density on the nitrogen atom,while electron-withdrawing groups $(EWG)$ decrease it.$(i)$ Aniline: Reference compound.(ii) $p$-Nitroaniline: $-NO_2$ is a strong electron-withdrawing group ($-M$ and $-I$ effect),which significantly decreases basic strength.(iii) $p$-Cyanoaniline: $-CN$ is an electron-withdrawing group ($-M$ and $-I$ effect),which decreases basic strength,but less than $-NO_2$.(iv) $p$-Toluidine: $-CH_3$ is an electron-donating group ($+H$ and $+I$ effect),which increases basic strength.Comparing the effects:- $(iv)$ has an $EDG$ $(+H)$,making it the most basic.- $(i)$ is the reference.- $(iii)$ has an $EWG$ $(-M)$,making it less basic than $(i)$.- $(ii)$ has a stronger $EWG$ $(-M)$,making it the least basic.Therefore,the decreasing order of basic strength is: $(iv) > (i) > (iii) > (ii)$.

Arrange the following compounds in decreasing order of basic strength:

Similar Questions

Which of the following reacts with $NaNO_2 + HCl$ to give phenol?

Arrange the following compounds in decreasing order of their basicity:

How many metamers are possible for the molecular formula $C_4H_{11}N$?

Rank the following species in order of decreasing nucleophilicity in a polar protic solvent (most $\to$ least nucleophilic):
$(1) \ CH_3CH_2CH_2O^{-}$,$(2) \ CH_3CH_2CH_2S^{-}$,$(3) \ CH_3CH_2C(=O)O^{-}$

What are $X$ and $Y$ in the following reactions?

Vedclass Test Series

Exam Paper Generator

Online Exam Module