Answer:
Sodium acetate (CH₃COONa)
Explanation:
A salt will give basic solution on dissolving in water it is a salt of strong base and weak acid.
A salt will give an acidic solution on dissolving in water if it is a salt of strong acid and weak base.
A salt will give neutral solution if it is a salt of acid and base of almost equal strength or dissociation.
Out of given salts
K₂SO₄ : it is a salt of strong base KOH and strong acid H₂SO₄.: neutral
Cu₂SO₄: it is a salt of weak base [Cu(OH)₂] and strong acid H₂SO₄: pH less than 7.
NH₄Cl : it is a salt of weak base [NH₄OH] and strong acid HCl: pH less than 7.
CH₃COONa: it is a salt of strong base [NaOH] and weak acid CH₃COOH:
pH more than 7.
