Answer:
For a: The given salt is acidic in nature.
For b: The given salt is neutral in nature.
For c: The given salt is neutral in nature.
Explanation:
Salts are formed by the combination of an acid and a base. There are 3 types of salt:
For the given options:
(a): [tex]NaHSO_4[/tex]
This salt is formed by the combination of sodium hydroxide (strong base) and the partial dissociation of sulfuric acid (strong acid). It also has a replaceable hydrogen ion which can be produced when dissolved in water. Thus, the given salt is acidic in nature.
(b): [tex]Na_2SO_4[/tex]
This salt is formed by the combination of sodium hydroxide (strong base) and sulfuric acid (strong acid).
Thus, the given salt is neutral in nature.
(c): [tex]NH_4CN[/tex]
This salt is formed by the combination of ammonium hydroxide (weak base) and hydrocyanic acid (weak acid).
Thus, the given salt is neutral in nature.