Rank the following compounds in order of incr | vedclass

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Question

(A) The acidic strength of phenols depends on the nature of substituents attached to the benzene ring. Electron-withdrawing groups $(EWG)$ increase ac

Vedclass · Accepted Answer

$2 < 4 < 1 < 3$

Vedclass · Answer

(A) The acidic strength of phenols depends on the nature of substituents attached to the benzene ring. Electron-withdrawing groups $(EWG)$ increase acidity by stabilizing the phenoxide ion,while electron-donating groups $(EDG)$ decrease acidity by destabilizing it.$(1)$ $2,4,6$-trichlorophenol: Contains three $-Cl$ groups,which are electron-withdrawing by the inductive effect $(-I)$.$(2)$ $2,4,6$-trimethylphenol: Contains three $-CH_3$ groups,which are electron-donating by the inductive effect $(+I)$ and hyperconjugation.$(3)$ $2,4,6$-trinitrophenol (picric acid): Contains three $-NO_2$ groups,which are strong electron-withdrawing groups by both $-I$ and $-M$ (mesomeric) effects.$(4)$ Phenol: Has no substituent.Comparing the effects:- $-CH_3$ $(EDG)$ makes the compound less acidic than phenol.- $-Cl$ $(EWG)$ makes the compound more acidic than phenol.- $-NO_2$ (strong $EWG$) makes the compound significantly more acidic than phenol.Order of increasing acidity: $(2) Thus,the correct option is $A$.

Rank the following compounds in order of increasing acidic strength.

Similar Questions

The correct order for acidity of the following hydroxyl compounds is:
$A. CH_3OH$
$B. (CH_3)_3COH$
$C. C_6H_5OH$
$D. p-CH_3OC_6H_4OH$
$E. p-O_2NC_6H_4OH$
Choose the correct answer from the options given below:

Assertion : Reimer-Tiemann reaction of phenol with $CCl_4$ in $NaOH$ at $340 \ K$ gives salicylic acid as the major product. Reason : The reaction occurs through intermediate formation of dichlorocarbene.

Identify the product $X$ in the following reaction: $C_6H_5MgBr + C_6H_5OH \rightarrow X$

The common name of $Benzene-1,4-diol$ is

What is the product formed when phenol reacts with $Br_2$ in $CCl_4$ at low temperature?

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