Arrange H2O , H2S and H2Se in order of increasing acidity.

Question

Arrange H2O , H2S and H2Se in order of increasing acidity. (A)  H2O < H2S < H2Se  (B)  H2S < H2O < H2Se  (C)  H2Se < H2S < H2O  (D)  H2O < H2Se < H2S

Tardigrade Admin · Accepted Answer

The acidic character of the hydrides of group 16 elements increases down the group i.e., H2O > H2S < H2Se as E —H bond strength decreases down the group, thus, release of H+ becomes easier.

Q. Arrange $H_{2} O$ , $H_{2} S$ and $H_{2} S e$ in order of increasing acidity.

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

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

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

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

The acidic character of the hydrides of group $16$ elements increases down the group i.e., $H_{2} O > H_{2} S < H_{2} S e$ as $E — H$ bond strength decreases down the group, thus, release of $H^{+}$ becomes easier.

Q. Arrange H2​O , H2​S and H2​Se in order of increasing acidity.

H2​O<H2​S<H2​Se

H2​S<H2​O<H2​Se

H2​Se<H2​S<H2​O

H2​O<H2​Se<H2​S