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Directions: The following question has four choices, out of which one or more is/are correct.
In the depression of freezing point experiment, it is found that the
  • a)
    vapour pressure of the solution is less than that of pure solvent
  • b)
    depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentration
  • c)
    cryoscopic constant is the same for all substances at a constant temperature
  • d)
    depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentration
Correct answer is option 'A,D'. Can you explain this answer?
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Directions: The following question has four choices, out of which one...
Statement (1) is correct as the vapour pressure of a solvent decreases on addition of a non-volatile solute.
The colligative properties depend on the number of particles in the solution. Hence, the change will not be the same for the solution of an electrolyte and a non-electrolyte, even if they have equal concentrations. Hence, statement (2) is incorrect.
However, the solutions of urea and glucose, having equal concentrations, will have the same depression in the freezing point as the number of particles of the solute are the same. Hence, statement (4) is correct.
The cryoscopic constant is specific for each solvent and is a function of temperature. Hence, (3) is incorrect.
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Directions: The following question has four choices, out of which one...
Depression of Freezing Point Experiment
In the depression of freezing point experiment, a solution is prepared by dissolving a solute in a solvent. The freezing point of the resulting solution is lower than that of the pure solvent. This is known as the depression of freezing point.

Vapour Pressure of the Solution
In the depression of freezing point experiment, it is found that the vapour pressure of the solution is less than that of the pure solvent. This is because the presence of the solute particles in the solvent reduces the number of solvent molecules available to escape into the vapor phase. As a result, the vapour pressure of the solution is lower than that of the pure solvent.

Depression in the Freezing Point
The depression in the freezing point is directly proportional to the molality (m) of the solution. It is given by the equation:

ΔTf = Kf * m

Where:
ΔTf is the depression in the freezing point
Kf is the cryoscopic constant of the solvent
m is the molality of the solution

Depression in Freezing Point for Glucose and NaCl Solutions
In the given question, it is stated that the depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentration. This statement is incorrect. The depression in the freezing point depends on the nature of the solute particles and their interaction with the solvent. Since glucose and NaCl are different solutes with different properties, their effect on the freezing point depression will be different.

Cryoscopic Constant
The cryoscopic constant (Kf) is a characteristic property of the solvent and is a measure of how much the freezing point of the solvent is depressed per unit molality of the solution. The cryoscopic constant is different for different solvents and remains constant at a given temperature.

Depression in Freezing Point for Glucose and Urea Solutions
In the given question, it is stated that the depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentration. This statement is correct. Glucose and urea are both non-electrolytes, and when they dissolve in a solvent, they do not dissociate into ions. Hence, their effect on the freezing point depression will be similar for solutions of the same molality.

In conclusion, the correct statements in the given question are:
- The vapour pressure of the solution is less than that of the pure solvent (option A)
- The depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentration (option D)
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Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer?
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Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer?.
Solutions for Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer?, a detailed solution for Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer? has been provided alongside types of Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Directions: The following question has four choices, out of which one or more is/are correct.In the depression of freezing point experiment, it is found that thea)vapour pressure of the solution is less than that of pure solventb)depression in the freezing point will be the same for a solution of glucose and that of NaCl, each 1 m in concentrationc)cryoscopic constant is the same for all substances at a constant temperatured)depression in the freezing point will be the same for a solution of glucose and that of urea, each 1 m in concentrationCorrect answer is option 'A,D'. Can you explain this answer? tests, examples and also practice JEE tests.
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