20% of acetic acid is dissociated when its 5g is added to 500 mL of water. The depression in freezin — JEE Mains Chemistry Past Papers Chemistry Question
Question
20% of acetic acid is dissociated when its 5g is added to 500 mL of water. The depression in freezing point of such water is _____ × 10–3°C. Atomci mass of C, H and O are 12, 1 and 16 a.m.u. respectively. [Given : Molal depression constant and density of water are 1.86 K kg mol–1 and 1g cm–3 respectively.] NTA (372) Reso (372)
Answer: C
💡 Solution & Explanation
Degree of dissociation = 0.2 CH3COOH Tf = Kf ×m × i = 5 . 2 . 5 . = 0.372 | JEE(Main) 2023 | DATE : 01-02-2023 (SHIFT-2) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 8
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