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Greater the degree of dissociation (a) of an acid or base, greater is its acidic or basic strength. The relative strengths of weak acids or bases are compared in terms of √Ka or √Kb.
Weak electrolytes are dissociated to less extent in water. Dissociation constants depend upon temperature.
The questions given (i) to (iv) consist of an assertion (A) reason (R). Choose the correct option.
Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.
Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.
- a)A and R both are correct and R is the correct explanation of A.
- b)A and R both are correct but R is not the correct explanation of A.
- c)A is true but R is false.
- d)A is false but R is true.
Correct answer is option 'A'. Can you explain this answer?
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Greater the degree of dissociation (a) of an acid or base, greater is...
The degree of dissociation of a weak electrolyte:
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- depends on the nature of solute and solvent. Higher is the dielectric constant of the solvent and lower is the viscosity of solvent, higher is the degree of dissociation as the inter ionic attraction decreases.
- increases with increase in dilution
- increases with increase in temperature. With increase in temperature, interionic attractions, solvation of ions, viscosity decreases and the kinetic energy of ions increases.
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Greater the degree of dissociation (a) of an acid or base, greater is...
Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.
Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.
To understand this assertion and reason, let's break it down and examine each statement separately.
Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.
When a weak electrolyte, such as a weak acid or base, is dissolved in water, it undergoes partial dissociation. This means that only a fraction of the molecules break apart into ions. The degree of dissociation (a) is defined as the ratio of the number of dissociated molecules to the total number of molecules initially present.
When the dilution of the weak electrolyte increases, the concentration of the solution decreases. This decrease in concentration leads to an increase in the degree of dissociation. This happens because there are fewer molecules present in the solution, so the likelihood of a molecule dissociating into ions increases. Therefore, the assertion is correct.
Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.
The reason provided is also correct. According to the principle of equilibrium, the degree of dissociation of a weak electrolyte is inversely proportional to its concentration. When the concentration of the weak electrolyte decreases, the equilibrium shifts towards dissociation to maintain the balance of ions in the solution. As a result, the degree of dissociation increases.
If the dilution increases by 100 times, the concentration of the weak electrolyte decreases by the same factor. As a result, the degree of dissociation increases by approximately 10 times. This can be mathematically represented as:
a1/c1 = a2/c2
Where a1 and c1 are the initial degree of dissociation and concentration, and a2 and c2 are the final degree of dissociation and concentration, respectively. When c2 is 1/100 times c1, a2 is approximately 10 times a1.
Therefore, the reason provided is a correct explanation for the assertion.
Conclusion: Both the assertion and reason are correct, and the reason is the correct explanation of the assertion. Hence, option 'A' is the correct answer.
Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.
To understand this assertion and reason, let's break it down and examine each statement separately.
Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.
When a weak electrolyte, such as a weak acid or base, is dissolved in water, it undergoes partial dissociation. This means that only a fraction of the molecules break apart into ions. The degree of dissociation (a) is defined as the ratio of the number of dissociated molecules to the total number of molecules initially present.
When the dilution of the weak electrolyte increases, the concentration of the solution decreases. This decrease in concentration leads to an increase in the degree of dissociation. This happens because there are fewer molecules present in the solution, so the likelihood of a molecule dissociating into ions increases. Therefore, the assertion is correct.
Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.
The reason provided is also correct. According to the principle of equilibrium, the degree of dissociation of a weak electrolyte is inversely proportional to its concentration. When the concentration of the weak electrolyte decreases, the equilibrium shifts towards dissociation to maintain the balance of ions in the solution. As a result, the degree of dissociation increases.
If the dilution increases by 100 times, the concentration of the weak electrolyte decreases by the same factor. As a result, the degree of dissociation increases by approximately 10 times. This can be mathematically represented as:
a1/c1 = a2/c2
Where a1 and c1 are the initial degree of dissociation and concentration, and a2 and c2 are the final degree of dissociation and concentration, respectively. When c2 is 1/100 times c1, a2 is approximately 10 times a1.
Therefore, the reason provided is a correct explanation for the assertion.
Conclusion: Both the assertion and reason are correct, and the reason is the correct explanation of the assertion. Hence, option 'A' is the correct answer.
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Greater the degree of dissociation (a) of an acid or base, greater is its acidic or basic strength. The relative strengths of weak acids or bases are compared in terms of √Ka or √Kb.Weak electrolytes are dissociated to less extent in water. Dissociation constants depend upon temperature.The questions given (i) to (iv) consist of an assertion (A) reason (R). Choose the correct option.Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.a)A and R both are correct and R is the correct explanation of A.b)A and R both are correct but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'A'. Can you explain this answer?
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Greater the degree of dissociation (a) of an acid or base, greater is its acidic or basic strength. The relative strengths of weak acids or bases are compared in terms of √Ka or √Kb.Weak electrolytes are dissociated to less extent in water. Dissociation constants depend upon temperature.The questions given (i) to (iv) consist of an assertion (A) reason (R). Choose the correct option.Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.a)A and R both are correct and R is the correct explanation of A.b)A and R both are correct but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Greater the degree of dissociation (a) of an acid or base, greater is its acidic or basic strength. The relative strengths of weak acids or bases are compared in terms of √Ka or √Kb.Weak electrolytes are dissociated to less extent in water. Dissociation constants depend upon temperature.The questions given (i) to (iv) consist of an assertion (A) reason (R). Choose the correct option.Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.a)A and R both are correct and R is the correct explanation of A.b)A and R both are correct but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Greater the degree of dissociation (a) of an acid or base, greater is its acidic or basic strength. The relative strengths of weak acids or bases are compared in terms of √Ka or √Kb.Weak electrolytes are dissociated to less extent in water. Dissociation constants depend upon temperature.The questions given (i) to (iv) consist of an assertion (A) reason (R). Choose the correct option.Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.a)A and R both are correct and R is the correct explanation of A.b)A and R both are correct but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'A'. Can you explain this answer?.
Greater the degree of dissociation (a) of an acid or base, greater is its acidic or basic strength. The relative strengths of weak acids or bases are compared in terms of √Ka or √Kb.Weak electrolytes are dissociated to less extent in water. Dissociation constants depend upon temperature.The questions given (i) to (iv) consist of an assertion (A) reason (R). Choose the correct option.Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.a)A and R both are correct and R is the correct explanation of A.b)A and R both are correct but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Greater the degree of dissociation (a) of an acid or base, greater is its acidic or basic strength. The relative strengths of weak acids or bases are compared in terms of √Ka or √Kb.Weak electrolytes are dissociated to less extent in water. Dissociation constants depend upon temperature.The questions given (i) to (iv) consist of an assertion (A) reason (R). Choose the correct option.Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.a)A and R both are correct and R is the correct explanation of A.b)A and R both are correct but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Greater the degree of dissociation (a) of an acid or base, greater is its acidic or basic strength. The relative strengths of weak acids or bases are compared in terms of √Ka or √Kb.Weak electrolytes are dissociated to less extent in water. Dissociation constants depend upon temperature.The questions given (i) to (iv) consist of an assertion (A) reason (R). Choose the correct option.Assertion: When dilution increases, the degree of dissociation of weak electrolyte also increases.Reason: The degree of dissociation is inversely proportional to concentration. When the dilution increases by 100 times, the dissociation increases by 10 times.a)A and R both are correct and R is the correct explanation of A.b)A and R both are correct but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'A'. Can you explain this answer?.
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