Acidity of diprotic acids in aqueous solutions increases in the order

Question

Acidity of diprotic acids in aqueous solutions increases in the order (A)  H2 S < H2 S e < H2 Te  (B)  H2 S e < H2 S < H2 T e  (C)  H2 Te < H2 S < H2 S e  (D)  H2 Se < H2 T e < H2 S

Tardigrade Admin · Accepted Answer

Acidic strength of hydrides increases as the size
of central atom increases which weakens the
M- H bond. Since, the size increases from S to Te
thus acidic strength follows the order.

H_{2} S < H_{2} S e < H_{2} T e

Acidic nature

\propto \frac{1}{B o n d d i ss p c ia t i o n e n t ha lp y}

S to Te size increases, bond dissociation enthalpy
decreases and acidic nature increases.

Q. Acidity of diprotic acids in aqueous solutions increases in the order

$H_{2} S < H_{2} S e < H_{2} T e$

$H_{2} S e < H_{2} S < H_{2} T e$

$H_{2} T e < H_{2} S < H_{2} S e$

$H_{2} S e < H_{2} T e < H_{2} S$

Q. Acidity of diprotic acids in aqueous solutions increases in the order

H2​S<H2​Se<H2​Te

H2​Se<H2​S<H2​Te

H2​Te<H2​S<H2​Se

H2​Se<H2​Te<H2​S

$H_{2} S < H_{2} S e < H_{2} T e$

$H_{2} S e < H_{2} S < H_{2} T e$

$H_{2} T e < H_{2} S < H_{2} S e$

$H_{2} S e < H_{2} T e < H_{2} S$