Which of these salts has the highest ph? k2so4 cu2so4 nh4cl nach3coo

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.

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