Class 9 Exam > Class 9 Questions > Which among the following show positive devia...
Start Learning for Free
Which among the following show positive deviation?
- a)Hydrochloric acid and water
- b)Chloroform and benzene
- c)Acetone and carbon disulphide
- d)Acetone and aniline
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Which among the following show positive deviation?a)Hydrochloric acid ...
( Solute- solute and > solute – solvent interactions Solvent – solvent )
Most Upvoted Answer
Which among the following show positive deviation?a)Hydrochloric acid ...
Positive Deviation in Solutions
Positive deviation is observed when the actual vapour pressure of a solution is greater than the expected vapour pressure. It occurs when the intermolecular forces between the solute and the solvent are weaker than the intermolecular forces between the solute-solute and solvent-solvent molecules. This results in the molecules escaping from the surface more easily, leading to an increased vapour pressure.
Examples of Positive Deviation
Out of the given options, option C (Acetone and carbon disulphide) shows positive deviation. The other options exhibit negative deviation.
Explanation
Acetone and carbon disulphide have similar molecular structures with similar intermolecular forces. However, they have different polarities. Acetone is a polar molecule due to the presence of a carbonyl group, while carbon disulphide is a non-polar molecule. When mixed together, the polar and non-polar molecules do not interact strongly with each other, resulting in a positive deviation from Raoult's law.
Implications
Positive deviation is important in the manufacture of certain products such as perfumes, where the volatility of the components is important. It is also used in the separation of different components in the chemical industry.
Positive deviation is observed when the actual vapour pressure of a solution is greater than the expected vapour pressure. It occurs when the intermolecular forces between the solute and the solvent are weaker than the intermolecular forces between the solute-solute and solvent-solvent molecules. This results in the molecules escaping from the surface more easily, leading to an increased vapour pressure.
Examples of Positive Deviation
Out of the given options, option C (Acetone and carbon disulphide) shows positive deviation. The other options exhibit negative deviation.
Explanation
Acetone and carbon disulphide have similar molecular structures with similar intermolecular forces. However, they have different polarities. Acetone is a polar molecule due to the presence of a carbonyl group, while carbon disulphide is a non-polar molecule. When mixed together, the polar and non-polar molecules do not interact strongly with each other, resulting in a positive deviation from Raoult's law.
Implications
Positive deviation is important in the manufacture of certain products such as perfumes, where the volatility of the components is important. It is also used in the separation of different components in the chemical industry.
Free Test
FREE
| Start Free Test |
Community Answer
Which among the following show positive deviation?a)Hydrochloric acid ...
C
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
|
Explore Courses for Class 9 exam
|
|
Similar Class 9 Doubts
Top Courses for Class 9View all
Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer?
Question Description
Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer?.
Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which among the following show positive deviation?a)Hydrochloric acid and waterb)Chloroform and benzenec)Acetone and carbon disulphided)Acetone and anilineCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Suggested Free Tests
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