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Questions and Answers
What are buffers?
What are buffers?
- Compounds that enhance changes in pH upon the addition of small quantities of acid or alkali
- Compounds that resist changes in pH upon the addition of small quantities of acid or alkali (correct)
- Compounds that only work in acidic solutions
- Compounds that only work in basic solutions
What is the composition of a buffer solution?
What is the composition of a buffer solution?
- A weak acid and its conjugate base, or a weak base and its conjugate acid (correct)
- A strong acid and a strong base
- Only a weak base
- Only a weak acid
What happens to the pH when 1ml of 0.1 N HCl solution is added to 100ml of pure water?
What happens to the pH when 1ml of 0.1 N HCl solution is added to 100ml of pure water?
- The pH is reduced from 7 to 3 (correct)
- The pH becomes erratic
- The pH remains the same at 7
- The pH is increased from 7 to 10
What happens to the pH when a strong acid is added to a 0.01 M solution containing equal quantities of acetic acid and sodium acetate?
What happens to the pH when a strong acid is added to a 0.01 M solution containing equal quantities of acetic acid and sodium acetate?
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What happens to the buffer solution when a strong base is added?
What happens to the buffer solution when a strong base is added?
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