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Question
Which terms are in equilibrium during depression of freezing point in a solution?
Which terms are in equilibrium during depression of freezing point in a solution?
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Solution
The correct option is A liquid solvent, solid solvent
The equilibrium is always between the liquid phase to the solid phase of the solvent during the depression of the freezing point. The freezing point of pure water is 0°C, but that melting point can be depressed by the adding of a solute such as salt.
The use of ordinary salt (sodium chloride, NaCl) on icy roads in the winter helps to melt the ice from the roads by lowering the melting point of the ice. A solution typically has a measurably lower melting point than the pure solvent.
Option A is correct.
The equilibrium is always between the liquid phase to the solid phase of the solvent during the depression of the freezing point. The freezing point of pure water is 0°C, but that melting point can be depressed by the adding of a solute such as salt.
The use of ordinary salt (sodium chloride, NaCl) on icy roads in the winter helps to melt the ice from the roads by lowering the melting point of the ice. A solution typically has a measurably lower melting point than the pure solvent.
Option A is correct.
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