0.1 M solution of which one of these substances will be basic ?

Options

A. Sodium borate
B. Ammonium ditoride
C. Calcium nitrate
D. Sodium sulphate

Answer

A

Explanation

Salt of `S_(B)//W_(A)` will be basic.
a. Sodium borate, salt of `S_(B)//W_(A) (NaOH +H_(3)BO_(3))`. It given basic solution.
b. `NH_(4)CI`, salt of `w_(B)//S_(A), (NH_(4)OH +HCI)`. It hydrolyses and given acidic solution.
c. `Ca(NO_(3))_(2)`, salt of `w_(B)//S_(A)`.
`[Ca(OH)_(2)+HNO_(3))`, and gives acidic solution.
d. `Na_(2)SO_(4)`, salt of `S_(A)//S_(B)`, which do not hydrolyses, gives neutral solution with `pH =7`.