Class 12 Exam > Class 12 Questions > Which of the following statements are correct...
Start Learning for Free
Which of the following statements are correct?
- a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fraction
- b)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° C
- c)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4
- d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing point
Correct answer is option 'A,C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Which of the following statements are correct?a)Raoult’s law sta...
(a,c)
(a) Vapour pressure of a component in a solution, 
by Raoult's law, thus correct.
by Raoult's law, thus correct.(b) π = i MRT
For NaBr,
y = 2, / = 1 + (y - 1)x = 2
M = 1, T = (273 + t )
∴ π = 2R (273 + t) thus, incorrect.
(c)
π = i MRT
π ∝ for equimolar solution
i = 1 for sucrose
i = (1 + x)forCH3COOH (x < < 1)
for CH3COOH being weak acid
i = 2 for KCI
i = 3 for K2S04
Thus, π (osmotic pressure) of 0.01 M solutions of sucrose < CH3COOH < KCI < K2S04 Thus, correct.
and K1 are different, hence ΔTf will be different, thus incorrect.Most Upvoted Answer
Which of the following statements are correct?a)Raoult’s law sta...
Explanation:
Raoult’s Law:
- Raoult’s Law states that the vapor pressure of a component in a solution is directly proportional to its mole fraction in the solution. Therefore, statement a) is correct.
Osmotic Pressure:
- The osmotic pressure (π) of a solution is given by the equation π = iMRT, where i is the van 't Hoff factor, M is the molarity of the solution, R is the ideal gas constant, and T is the temperature in Kelvin. The statement b) is incorrect as the formula provided is not the correct formula for osmotic pressure.
Order of Osmotic Pressure:
- The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is KCl < K2SO4 < CH3COOH < sucrose. Hence, statement c) is correct.
Depression in Freezing Point:
- The depression in freezing point of a solution is given by the formula ΔTf = Kf * m, where Kf is the cryoscopic constant and m is the molality of the solution. Since the properties of the solvent (water and methanol) are different, two solutions of urea with the same molality in water and methanol will not have the same depression in freezing point. Therefore, statement d) is incorrect.
Raoult’s Law:
- Raoult’s Law states that the vapor pressure of a component in a solution is directly proportional to its mole fraction in the solution. Therefore, statement a) is correct.
Osmotic Pressure:
- The osmotic pressure (π) of a solution is given by the equation π = iMRT, where i is the van 't Hoff factor, M is the molarity of the solution, R is the ideal gas constant, and T is the temperature in Kelvin. The statement b) is incorrect as the formula provided is not the correct formula for osmotic pressure.
Order of Osmotic Pressure:
- The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is KCl < K2SO4 < CH3COOH < sucrose. Hence, statement c) is correct.
Depression in Freezing Point:
- The depression in freezing point of a solution is given by the formula ΔTf = Kf * m, where Kf is the cryoscopic constant and m is the molality of the solution. Since the properties of the solvent (water and methanol) are different, two solutions of urea with the same molality in water and methanol will not have the same depression in freezing point. Therefore, statement d) is incorrect.
|
Explore Courses for Class 12 exam
|
|
Similar Class 12 Doubts
Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer?
Question Description
Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer?.
Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer?.
Solutions for Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer?, a detailed solution for Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? has been provided alongside types of Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements are correct?a)Raoult’s law states that the vapour pressure of a component over a solution is directly proportional to its mole fractionb)The osmotic pressure (π) of a solution is given by the equation π = 2Rt of 1 M NaBr solution at temperature t° Cc)The correct order of osmotic pressure of 0.01 M aqueous solution of each compound is sucrose < CH3COOH < KCI < K2SO4d)Two solutions of urea of 1 mol kg-1 in water and in methanol will have the same depression in freezing pointCorrect answer is option 'A,C'. Can you explain this answer? tests, examples and also practice Class 12 tests.
|
|
Explore Courses for Class 12 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup