First slide

Chemical properties

Question

Acidity of diprotic acids in aqueous solutions increases in the order

Easy

A

$H_{2} S < H_{2} Se < H_{2} Te$
B

$H_{2} Se < H_{2} S < H_{2} Te$
C

$H_{2} Te < H_{2} S < H_{2} Se$
D

$H_{2} Se < H_{2} Te < H_{2} S$

Solution

As the atomic size increases down the group, the bond length increases and the bond strength decreases and the cleavage of E-H bond becomes easier thus, more will be the acidity. Thus, the correct order is :
$H_{2} S < H_{2} Se < H_{2} Te$

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