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Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.
Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is NOT the correct explanation of A
- c)A is true but R is false
- d)A is false and R is True
Correct answer is option 'A'. Can you explain this answer?
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Directions: In the following questions, A statement of Assertion (A) ...
Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.
Reason (R): For weak electrolytes, the degree of dissociation increases with the dilution of the solution.
Explanation:
Introduction:
- Λm represents the molar conductivity of an electrolyte solution, which is a measure of the ability of the solution to conduct electricity.
- The degree of dissociation (α) of an electrolyte is the fraction of the total number of molecules that dissociate into ions when the electrolyte is dissolved in a solvent.
A is true:
- The assertion (A) is true because the molar conductivity (Λm) of weak electrolytes does show a sharp increase when the electrolytic solution is diluted.
- When a weak electrolyte is dissolved in a solvent, only a small fraction of the molecules dissociate into ions.
- As the solution is diluted, the concentration of the ions decreases, and the average distance between ions increases.
- This increase in distance between ions leads to a decrease in the electrostatic forces between them, making it easier for them to move and carry an electric charge.
- As a result, the molar conductivity of the solution increases.
R is true:
- The reason (R) is also true because the degree of dissociation (α) of weak electrolytes increases with the dilution of the solution.
- When a weak electrolyte is dissolved in a solvent, the degree of dissociation is defined as the ratio of the number of moles of dissociated ions to the initial number of moles of the electrolyte.
- When the solution is diluted, the concentration of the electrolyte decreases, and the ratio of the number of moles of dissociated ions to the initial number of moles increases.
- This increase in the degree of dissociation leads to an increase in the number of ions available to conduct electricity, resulting in a higher molar conductivity.
R is the correct explanation of A:
- The reason (R) provides a correct explanation for the assertion (A).
- The increase in the degree of dissociation with dilution of the solution directly leads to an increase in the molar conductivity of the weak electrolyte solution.
- Therefore, both the assertion (A) and the reason (R) are true, and the reason (R) is the correct explanation of the assertion (A).
Therefore, the correct answer is option A.
Reason (R): For weak electrolytes, the degree of dissociation increases with the dilution of the solution.
Explanation:
Introduction:
- Λm represents the molar conductivity of an electrolyte solution, which is a measure of the ability of the solution to conduct electricity.
- The degree of dissociation (α) of an electrolyte is the fraction of the total number of molecules that dissociate into ions when the electrolyte is dissolved in a solvent.
A is true:
- The assertion (A) is true because the molar conductivity (Λm) of weak electrolytes does show a sharp increase when the electrolytic solution is diluted.
- When a weak electrolyte is dissolved in a solvent, only a small fraction of the molecules dissociate into ions.
- As the solution is diluted, the concentration of the ions decreases, and the average distance between ions increases.
- This increase in distance between ions leads to a decrease in the electrostatic forces between them, making it easier for them to move and carry an electric charge.
- As a result, the molar conductivity of the solution increases.
R is true:
- The reason (R) is also true because the degree of dissociation (α) of weak electrolytes increases with the dilution of the solution.
- When a weak electrolyte is dissolved in a solvent, the degree of dissociation is defined as the ratio of the number of moles of dissociated ions to the initial number of moles of the electrolyte.
- When the solution is diluted, the concentration of the electrolyte decreases, and the ratio of the number of moles of dissociated ions to the initial number of moles increases.
- This increase in the degree of dissociation leads to an increase in the number of ions available to conduct electricity, resulting in a higher molar conductivity.
R is the correct explanation of A:
- The reason (R) provides a correct explanation for the assertion (A).
- The increase in the degree of dissociation with dilution of the solution directly leads to an increase in the molar conductivity of the weak electrolyte solution.
- Therefore, both the assertion (A) and the reason (R) are true, and the reason (R) is the correct explanation of the assertion (A).
Therefore, the correct answer is option A.
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Directions: In the following questions, A statement of Assertion (A) ...
Weak electrolytes dissociate partially in concentrated solution. On dilution, their degree of dissociation increases hence, their Λm increases sharply.
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Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer?
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Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. 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 Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. 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 Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer?.
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. 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 Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. 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 Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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Here you can find the meaning of Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Λm for weak electrolytes shows a sharp increase when the electrolytic solution is diluted.Reason (R): For weak electrolytes degree of dissociation increases with dilution of solution.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is TrueCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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