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प्रश्न
Explain the following:
An aqueous solution of urea boils above 100°C but freezes below 0°C.
स्पष्ट कीजिए
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उत्तर
Urea is a non-volatile solute. When dissolved in water, it lowers the vapour pressure, causing the solution to boil above 100°C (boiling point elevation) and freeze below 0°C (freezing point depression). These are colligative properties, depending only on the number of solute particles.
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