Class 10 Exam > Class 10 Questions > Statement A:Solubility of alcohols in water g...
Start Learning for Free
Statement A: Solubility of alcohols in water goes on increasing with increasing molecular weight.
Statement B: Boiling point of alcohols goes on increasing with increasing molecular weight.
- a)Statement A is true; Statement B is false.
- b)Statement B is true; Statement A is false.
- c)Both the statements A and B are true
- d)Neither statement A nor statement B is true.
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Statement A:Solubility of alcohols in water goes on increasing with in...
Solubility of alcohols in water decreases with increasing molecular weight. The first three alcohols (methanol, ethanol and propanol) are completely miscible. Each alcohol consists of a carbon chain (always non-polar) and a OH group (which is polar). The solubility of alcohols starts to decrease with butanol. Alcohols are considered immiscible after heptanol.
Boiling point of alcohols increases with increasing molecular weight. The boiling point of alcohols increases as the length of the hydrocarbon chain increases.
Most Upvoted Answer
Statement A:Solubility of alcohols in water goes on increasing with in...
Statement A: Solubility of alcohols in water goes on increasing with increasing molecular weight.
Statement B: Boiling point of alcohols goes on increasing with increasing molecular weight.
Explanation:
Statement A: The solubility of alcohols in water is influenced by the presence of the hydroxyl (-OH) group. Alcohols with smaller molecular weights, such as methanol (CH3OH) and ethanol (C2H5OH), are highly soluble in water because they can form hydrogen bonds with water molecules. These hydrogen bonds allow the alcohol molecules to mix and dissolve in water.
However, as the molecular weight of alcohols increases, their solubility in water decreases. This is because the hydrocarbon chain in higher molecular weight alcohols becomes larger and more nonpolar, reducing their ability to form hydrogen bonds with water. Instead, they tend to form stronger intermolecular forces with themselves, resulting in lower solubility in water.
Therefore, Statement A is false.
Statement B: The boiling point of alcohols is primarily determined by the strength of their intermolecular forces. As the molecular weight of alcohols increases, the size and surface area of the molecules also increase. This allows for stronger dispersion forces (London forces) between the alcohol molecules.
Dispersion forces are attractive forces between molecules caused by temporary fluctuations in electron distribution. Larger molecules have more electrons, leading to stronger dispersion forces. These stronger intermolecular forces require more energy to overcome, resulting in higher boiling points.
Therefore, Statement B is true.
Conclusion:
Based on the explanation above, we can conclude that Statement A is false and Statement B is true. Thus, the correct answer is option 'B': Statement B is true; Statement A is false.
Statement B: Boiling point of alcohols goes on increasing with increasing molecular weight.
Explanation:
Statement A: The solubility of alcohols in water is influenced by the presence of the hydroxyl (-OH) group. Alcohols with smaller molecular weights, such as methanol (CH3OH) and ethanol (C2H5OH), are highly soluble in water because they can form hydrogen bonds with water molecules. These hydrogen bonds allow the alcohol molecules to mix and dissolve in water.
However, as the molecular weight of alcohols increases, their solubility in water decreases. This is because the hydrocarbon chain in higher molecular weight alcohols becomes larger and more nonpolar, reducing their ability to form hydrogen bonds with water. Instead, they tend to form stronger intermolecular forces with themselves, resulting in lower solubility in water.
Therefore, Statement A is false.
Statement B: The boiling point of alcohols is primarily determined by the strength of their intermolecular forces. As the molecular weight of alcohols increases, the size and surface area of the molecules also increase. This allows for stronger dispersion forces (London forces) between the alcohol molecules.
Dispersion forces are attractive forces between molecules caused by temporary fluctuations in electron distribution. Larger molecules have more electrons, leading to stronger dispersion forces. These stronger intermolecular forces require more energy to overcome, resulting in higher boiling points.
Therefore, Statement B is true.
Conclusion:
Based on the explanation above, we can conclude that Statement A is false and Statement B is true. Thus, the correct answer is option 'B': Statement B is true; Statement A is false.
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
|
Explore Courses for Class 10 exam
|
|
Similar Class 10 Doubts
Top Courses for Class 10View all
Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer?
Question Description
Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer?.
Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Statement A:Solubility of alcohols in water goes on increasing with increasing molecular weight.Statement B:Boiling point of alcohols goes on increasing with increasing molecular weight.a)Statement A is true;Statement B is false.b)Statement B is true;Statement A is false.c)Both the statements A and B are trued)Neither statement A nor statement B is true.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 10 tests.
|
|
Explore Courses for Class 10 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