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A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]
- a)m-chlorobenzoic acid (pKa = 3.98)
- b)p-chlorocinnamic acid (pKa = 4.41)
- c)2, 5-dihydroxy benzoic acid (pKa = 2.97)
- d)Acetoacetic acid (pKa = 3.58)
Correct answer is option 'D'. Can you explain this answer?
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A physician wishes to prepare a buffer solution of pH = 3.58 that effi...
For small concentration of buffering agent and for maximum buffer capacity
∴ pH = pKa
Most Upvoted Answer
A physician wishes to prepare a buffer solution of pH = 3.58 that effi...
To prepare a buffer solution of pH 3.58, the physician needs to choose a weak acid and its sodium salt that can efficiently resist changes in pH. The best choice for this buffer solution is acetoacetic acid (pKa = 3.58).
Explanation:
1. Understanding buffer solutions:
- A buffer solution consists of a weak acid and its conjugate base (salt) or a weak base and its conjugate acid.
- Buffers are able to resist changes in pH when small amounts of acid or base are added to the solution.
- The pH of a buffer solution is determined by the pKa of the weak acid and its salt.
2. Choosing the best weak acid-salt pair:
- The pH of the buffer solution should be close to the desired pH of 3.58.
- The pKa of the weak acid should be close to the desired pH for effective buffering.
- The weak acid and its salt should be present in small concentrations to minimize the effect on the overall pH of the solution.
3. Analyzing the options:
a) m-chlorobenzoic acid (pKa = 3.98):
- The pKa is higher than the desired pH, indicating that it may not be an efficient buffer at pH 3.58.
- It is not the best choice for this buffer solution.
b) p-chlorocinnamic acid (pKa = 4.41):
- The pKa is higher than the desired pH, suggesting that it may not be an effective buffer at pH 3.58.
- It is not the best choice for this buffer solution.
c) 2, 5-dihydroxy benzoic acid (pKa = 2.97):
- The pKa is lower than the desired pH, indicating that it may not be an efficient buffer at pH 3.58.
- It is not the best choice for this buffer solution.
d) Acetoacetic acid (pKa = 3.58):
- The pKa is equal to the desired pH, indicating that it has the potential to be an effective buffer at pH 3.58.
- It is the best choice for this buffer solution.
Conclusion:
Based on the analysis, acetoacetic acid (pKa = 3.58) and its sodium salt would be the best choice for preparing a buffer solution of pH 3.58 that efficiently resists changes in pH while containing only small concentrations of the buffering agents.
Explanation:
1. Understanding buffer solutions:
- A buffer solution consists of a weak acid and its conjugate base (salt) or a weak base and its conjugate acid.
- Buffers are able to resist changes in pH when small amounts of acid or base are added to the solution.
- The pH of a buffer solution is determined by the pKa of the weak acid and its salt.
2. Choosing the best weak acid-salt pair:
- The pH of the buffer solution should be close to the desired pH of 3.58.
- The pKa of the weak acid should be close to the desired pH for effective buffering.
- The weak acid and its salt should be present in small concentrations to minimize the effect on the overall pH of the solution.
3. Analyzing the options:
a) m-chlorobenzoic acid (pKa = 3.98):
- The pKa is higher than the desired pH, indicating that it may not be an efficient buffer at pH 3.58.
- It is not the best choice for this buffer solution.
b) p-chlorocinnamic acid (pKa = 4.41):
- The pKa is higher than the desired pH, suggesting that it may not be an effective buffer at pH 3.58.
- It is not the best choice for this buffer solution.
c) 2, 5-dihydroxy benzoic acid (pKa = 2.97):
- The pKa is lower than the desired pH, indicating that it may not be an efficient buffer at pH 3.58.
- It is not the best choice for this buffer solution.
d) Acetoacetic acid (pKa = 3.58):
- The pKa is equal to the desired pH, indicating that it has the potential to be an effective buffer at pH 3.58.
- It is the best choice for this buffer solution.
Conclusion:
Based on the analysis, acetoacetic acid (pKa = 3.58) and its sodium salt would be the best choice for preparing a buffer solution of pH 3.58 that efficiently resists changes in pH while containing only small concentrations of the buffering agents.
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A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. Can you explain this answer?
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A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. 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 A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. 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 A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. Can you explain this answer?.
A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. 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 A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. 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 A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. Can you explain this answer?.
Solutions for A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
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ample number of questions to practice A physician wishes to prepare a buffer solution of pH = 3.58 that efficiently resists a change in pH yet contains only small concentrations of the buffering agents. Which one of the following weak acids together with its sodium salt would be the best to use ? [1997]a)m-chlorobenzoic acid (pKa = 3.98)b)p-chlorocinnamic acid (pKa = 4.41)c)2, 5-dihydroxy benzoic acid (pKa = 2.97)d)Acetoacetic acid (pKa = 3.58)Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 11 tests.
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