From separate solutions of four sodium salts NaW,NaX,NaY and NaZ had pH7.0,9.0,10.0 and 11.0 respectively. When each solution was 0.1M , the strongest acid is :

Question

From separate solutions of four sodium salts NaW,NaX,NaY and NaZ had pH7.0,9.0,10.0 and 11.0 respectively. When each solution was 0.1M , the strongest acid is : (A) HW (B) HX (C) HY (D) HZ

Tardigrade Admin · Accepted Answer

The salt hydrolysis in each case occurs except NaW because its pH=7 . Thus, HW is strongest acid.

Q. From separate solutions of four sodium salts $N aW, N a X, N aY$ and $N a Z$ had $p H 7.0, 9.0, 10.0$ and $11.0$ respectively. When each solution was $0.1 M$ , the strongest acid is :

$H W$

$H X$

$H Y$

$H Z$

The salt hydrolysis in each case occurs except $N aW$ because its $p H = 7$ . Thus, $H W$ is strongest acid.

Q. From separate solutions of four sodium salts NaW,NaX,NaY and NaZ had pH7.0,9.0,10.0 and 11.0 respectively. When each solution was 0.1M , the strongest acid is :

HW

HX

HY

HZ