Question

For the reaction,
$C_2{H}_{5}OH+HX\underrightarrow{Zn{X}_2}{C}_2{H}_{5}X$,
the order of reactivity is:

• A. $HI$ > $HCl$ > $HBr$
• B. $HI$ > $HBr$ > $HCl$
• C. $HCl$ > $HBr$ > $HI$
• D. $HBr$ > $HI$ > $HCl$

Answer 1

The correct option is B $HI$ > $HBr$ > $HCl$

As we know,
bond strength are in order of
$H-Cl>H-Br>H-I$
so reactivity order is
$HI$ > $HBr$ > $HCl$