Arrange the hydrohalic acids (HX) of halogens | vedclass

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Question

(A) The acidic strength of hydrohalic acids $(HX)$ depends on the bond dissociation enthalpy of the $H-X$ bond. As we move down the group from $F$ to

Vedclass · Accepted Answer

$HF < HCl < HBr < HI$

Vedclass · Answer

(A) The acidic strength of hydrohalic acids $(HX)$ depends on the bond dissociation enthalpy of the $H-X$ bond. As we move down the group from $F$ to $I$,the atomic size of the halogen increases,which leads to an increase in the bond length and a decrease in the bond dissociation enthalpy. Therefore,the $H-I$ bond is the weakest and breaks most easily to release $H^+$ ions,making $HI$ the strongest acid. The correct order of increasing acidity is $HF < HCl < HBr < HI$.

Arrange the hydrohalic acids $(HX)$ of halogens in increasing order of acidity.

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