Final answer:
CH₃COONa will form a basic solution because it is derived from a strong base and a weak acid, leading to the release of OH⁻ ions in solution C) CH3COONa.
Step-by-step explanation:
Among the given options, the solution that will form a basic solution is c) CH₃COONa, which is the salt of a strong base (NaOH) and a weak acid (acetic acid, CH₃COOH). When CH₃COONa is dissolved in water, the acetate ion (CH₃COO⁻) can react with water to produce hydroxide ions (OH⁻), making the solution basic.
For the other options:
a) AlCl⁻ is a salt of a weak base (Al(OH)3) and a strong acid (HCl), which tends to make the solution acidic.
b) NaBr is a salt of a strong base (NaOH) and a strong acid (HBr), so it is neutral in solution.
d) K₂SO₄ is a salt of a strong base (KOH) and a strong acid (H₂SO₄), and it is neutral in solution.