In a solution of NaCl, the van't Hoff factor i is approximately 2.

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Multiple Choice

In a solution of NaCl, the van't Hoff factor i is approximately 2.

Explanation:
Van't Hoff factor tells us how many particles a solute produces in solution, which affects properties like boiling point and freezing point through colligative effects. For sodium chloride, dissolution yields two ions: Na+ and Cl-. So, per formula unit dissolved, there are two particles in the solution. That’s why the van't Hoff factor is about 2. In very dilute solutions this is essentially exact, while at higher concentrations some ionic interactions can cause slight deviations, but the value remains close to 2.

Van't Hoff factor tells us how many particles a solute produces in solution, which affects properties like boiling point and freezing point through colligative effects. For sodium chloride, dissolution yields two ions: Na+ and Cl-. So, per formula unit dissolved, there are two particles in the solution. That’s why the van't Hoff factor is about 2. In very dilute solutions this is essentially exact, while at higher concentrations some ionic interactions can cause slight deviations, but the value remains close to 2.

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