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In the depression of freezing point experiment, it is found that:
- a)The vapor pressure of the solution is less than that of pure solvent.
- b)The vapor pressure of the solution is more than that of pure solvent.
- c)Only solute molecules solidify at the freezing point.
- d)Only solvent molecules solidify at the freezing point.
Correct answer is option 'A,D'. Can you explain this answer?
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In the depression of freezing point experiment, itis found that: a)The...
A) is because due to addition of non volatile solute solvent vapout pressure decrease as suface area to escape of vapours decrease
for d) i think bot not sure solute is mainly taken as solid so only solvent will freeze
for d) i think bot not sure solute is mainly taken as solid so only solvent will freeze
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In the depression of freezing point experiment, itis found that: a)The...
Explanation:
In the depression of freezing point experiment, a solution is prepared by dissolving a solute in a solvent. The solute particles interact with the solvent particles, causing a change in the freezing point of the solution compared to the pure solvent.
Vapor Pressure of the Solution:
- The vapor pressure of a liquid is the pressure exerted by its vapor when the liquid and vapor are in equilibrium.
- In a solution, the presence of solute particles affects the vapor pressure of the solvent.
- The vapor pressure of the solution is lower than that of the pure solvent. This is because the solute particles occupy some of the space at the surface of the solution, reducing the number of solvent particles that can escape into the vapor phase. Hence, the vapor pressure decreases.
Depression of Freezing Point:
- When a solute is added to a solvent, the freezing point of the solution is lowered compared to the pure solvent.
- This is because the solute particles disrupt the crystal lattice structure of the solvent, making it more difficult for the solvent molecules to arrange themselves in an ordered manner to form a solid.
- The presence of solute particles lowers the freezing point of the solution.
Solute and Solvent Solidification:
- At the freezing point, both the solvent and solute molecules have the potential to solidify.
- However, it is important to note that the solute molecules generally have a much lower concentration compared to the solvent molecules.
- Therefore, in most cases, it is the solvent molecules that predominantly solidify at the freezing point.
- This is because the solvent molecules are present in much larger quantities and are more likely to form a solid structure.
Summary:
- In the depression of freezing point experiment, the vapor pressure of the solution is less than that of the pure solvent (option A).
- The depression of the freezing point occurs because the solute particles disrupt the crystal lattice structure of the solvent, making it more difficult for the solvent molecules to form a solid structure.
- At the freezing point, both the solvent and solute molecules have the potential to solidify, but it is generally the solvent molecules that predominantly solidify (option D).
In the depression of freezing point experiment, a solution is prepared by dissolving a solute in a solvent. The solute particles interact with the solvent particles, causing a change in the freezing point of the solution compared to the pure solvent.
Vapor Pressure of the Solution:
- The vapor pressure of a liquid is the pressure exerted by its vapor when the liquid and vapor are in equilibrium.
- In a solution, the presence of solute particles affects the vapor pressure of the solvent.
- The vapor pressure of the solution is lower than that of the pure solvent. This is because the solute particles occupy some of the space at the surface of the solution, reducing the number of solvent particles that can escape into the vapor phase. Hence, the vapor pressure decreases.
Depression of Freezing Point:
- When a solute is added to a solvent, the freezing point of the solution is lowered compared to the pure solvent.
- This is because the solute particles disrupt the crystal lattice structure of the solvent, making it more difficult for the solvent molecules to arrange themselves in an ordered manner to form a solid.
- The presence of solute particles lowers the freezing point of the solution.
Solute and Solvent Solidification:
- At the freezing point, both the solvent and solute molecules have the potential to solidify.
- However, it is important to note that the solute molecules generally have a much lower concentration compared to the solvent molecules.
- Therefore, in most cases, it is the solvent molecules that predominantly solidify at the freezing point.
- This is because the solvent molecules are present in much larger quantities and are more likely to form a solid structure.
Summary:
- In the depression of freezing point experiment, the vapor pressure of the solution is less than that of the pure solvent (option A).
- The depression of the freezing point occurs because the solute particles disrupt the crystal lattice structure of the solvent, making it more difficult for the solvent molecules to form a solid structure.
- At the freezing point, both the solvent and solute molecules have the potential to solidify, but it is generally the solvent molecules that predominantly solidify (option D).
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