Chemistry Exam  >  Chemistry Questions  >  Which of the following statement is/are true ... Start Learning for Free
Which of the following statement is/are true ?           
  • a)
    The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.  
  • b)
    Passage of solute molecules towards solution side through semipermeable membrane is osmosis   
  • c)
    Boiling point of solution is always lower than that of the solvent. 
  • d)
    Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.
Correct answer is option 'A,D'. Can you explain this answer?
Most Upvoted Answer
Which of the following statement is/are true ?a)The relative lowering ...
A is correct
B is incorrect as solvent passes through the semipermeable membrane
c is incorrect as bpt of solution is higher. "elevation in bpt"
d is correct for standard conditions bpt is the point where it's equal to atmospheric pressure.
Free Test
Community Answer
Which of the following statement is/are true ?a)The relative lowering ...

Relative Lowering in Vapor Pressure and Boiling Point of a Solution

- The statement (a) is true: The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute. This phenomenon is described by Raoult's law, which states that the vapor pressure of a solution is directly proportional to the mole fraction of solvent present in the solution.
- When a non-volatile solute is added to a solvent, the vapor pressure of the solution decreases compared to the pure solvent due to the presence of solute particles on the surface. The extent of this decrease in vapor pressure is proportional to the mole fraction of the solute.

Boiling Point of a Solution

- The statement (c) is false: The boiling point of a solution is not always lower than that of the solvent. In fact, the boiling point of a solution is higher than that of the pure solvent. This is due to the phenomenon known as boiling point elevation, which occurs when a non-volatile solute is added to a solvent.
- The presence of solute particles in the solution disrupts the vapor pressure equilibrium, requiring a higher temperature for the solution to reach its boiling point. The extent of this increase in boiling point is directly proportional to the molality of the solution.

Therefore, the correct statements are (a) and (d), as the relative lowering in vapor pressure is related to the mole fraction of the solute, and the boiling point of a solution is higher than that of the pure solvent due to boiling point elevation.
Explore Courses for Chemistry exam
Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer?
Question Description
Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer?.
Solutions for Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry. Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer?, a detailed solution for Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer? has been provided alongside types of Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the following statement is/are true ?a)The relative lowering in vapor pressure of a solution is equal to the mole fraction of the solute.b)Passage of solute molecules towards solution side through semipermeable membrane is osmosis c)Boiling point of solution is always lower than that of the solvent.d)Boiling point of a liquid is the temperature at which it vapor pressure becomes equal to 760 mm of Hg.Correct answer is option 'A,D'. Can you explain this answer? tests, examples and also practice Chemistry tests.
Explore Courses for Chemistry exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev