What is the characteristic pH of a 0.1 M aqueous solution of Sodium Sulfide (Na₂S)?
pH < 7
pH = 7
pH > 7
pH = 1
📝 Detailed explanation
Na₂S is a salt formed from a strong base (NaOH) and a weak acid (H₂S). The sulfide ion (S²⁻) undergoes basic hydrolysis to produce OH⁻ ions, making the solution basic.
