AIPMT PRELIMS 2009 Chemistry Colligative Properties MCQ Question
A 0.0020 m aqueous solution of an ionic compound Co(NH₃)₅(NO₂)Cl freezes at −0.00732 °C. Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be (kₓ = −1.86°C/m)
3
4
1
2
Correct Answer
Detailed Explanation
The freezing point depression is given by ΔTₓ = i × kₓ × m. Solving for i, we find i = 2, indicating the compound dissociates into two ions.
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