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0.1 M urea solution shows less depression in freezing point than 0.1 M MgCl2 solution. Explain. |
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Answer» In aqueous solution, MgCl2 ionises into Mg2+ and Cl– as it is an electrolyte while urea is a non-electrolyte and does not ionise. As a result no. of particles of solute in MgCl2 solution is more than in urea solution. Due to this depression in f.pt. of 0.1 M urea is less than that of 0.1 M MgCl2 solution because of depression in f.pt. is a colligative property and depends upon the number of solute particles 0.1 M urea solution shows less depression in freezing point than 0.1 M MgCl2 solution because MgCl2 is electrolyte that dissociate to give 3 ion. Hence it has depression in freezing point than urea. |
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