JEE Main 2025 Chemistry question

HA(aq) H(aq) + A(aq)

The freezing point depression of a 0.1 m aqueous solution of a monobasic weak acid HA is 0.20°C the dissociation constant for the acid is

Given: (HO) = 1.8 K kg mol, molality molarity

• (1)1.1 × 10
• (2)1.38 × 10Correct
• (3)1.90 × 10
• (4)1.89 × 10