Question

Which of these salts has the highest pH? K2SO4 Cu2SO4 NH4Cl NaCH3COO

Answer 1

the answer is D.  just took the test

Answer 2

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.