Chemistry · Colligative properties of dilute solutions: a relative lowering of vapour pressure, depression of freezing point, the elevation of boiling point and osmotic pressure
Lowering in vapour pressure is highest for:
Lowering in vapour pressure is highest for:
- A. \( 0.2 m \) urea
- B. \( 0.1 m \) glucose
- C. \( 0.1 m \) M \( g S O_{4} \)
- D. \( 0.1 m B a C l_{2} \)
Step-by-step solution
Lowering in vapour pressure is proportional to i × m, where i is van't Hoff factor. For non-electrolytes urea and glucose, i=1. For MgSO4 (2 ions), i≈2. For BaCl2 (3 ions), i≈3. Thus, i×m: A:1×0.2=0.2, B:1×0.1=0.1, C:2×0.1=0.2, D:3×0.1=0.3. Highest is D.
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