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Questions and Answers
The Henderson-Hasselbalch equation is used to calculate the pH of basic/alkaline buffers.
The Henderson-Hasselbalch equation is used to calculate the pH of basic/alkaline buffers.
True (A)
Strong acids are used to prepare acidic buffers.
Strong acids are used to prepare acidic buffers.
False (B)
A buffer solution must contain equal concentrations of acid and base components.
A buffer solution must contain equal concentrations of acid and base components.
False (B)
The pKa of a weak acid is the negative log of its acid ionization constant.
The pKa of a weak acid is the negative log of its acid ionization constant.
Alkalosis is a condition where the blood pH drops.
Alkalosis is a condition where the blood pH drops.
A conjugate base is a strong acid.
A conjugate base is a strong acid.
A buffer solution can resist changes in pH upon the addition of large amounts of acid or base.
A buffer solution can resist changes in pH upon the addition of large amounts of acid or base.
A weak acid and its conjugate base are required components of a buffer solution.
A weak acid and its conjugate base are required components of a buffer solution.
The pH of blood is maintained by a buffer solution that consists of only carbonic acid.
The pH of blood is maintained by a buffer solution that consists of only carbonic acid.
Hydrolysis of a salt can produce a neutral solution.
Hydrolysis of a salt can produce a neutral solution.
A buffer solution can completely neutralize the addition of acid or base.
A buffer solution can completely neutralize the addition of acid or base.
The hydroxide ion produced in the reaction makes the solution acidic.
The hydroxide ion produced in the reaction makes the solution acidic.
The pH of a buffer containing 0.1 M sodium acetate and 0.2 M acetic acid is 4.76.
The pH of a buffer containing 0.1 M sodium acetate and 0.2 M acetic acid is 4.76.
A sodium acetate-acetic acid buffer with a pH of 5.76 has a molar ratio of salt to acid of 1:10.
A sodium acetate-acetic acid buffer with a pH of 5.76 has a molar ratio of salt to acid of 1:10.
Phosphoric acid is a strong acid.
Phosphoric acid is a strong acid.
The pH of a buffer prepared by mixing 100mL of 0.2 M phosphoric acid with 250 mL of 0.1 M sodium phosphate monobase is 2.125.
The pH of a buffer prepared by mixing 100mL of 0.2 M phosphoric acid with 250 mL of 0.1 M sodium phosphate monobase is 2.125.
A conjugate base is the species that donates an electron pair.
A conjugate base is the species that donates an electron pair.
A weak acid has a pH equal to its pKa.
A weak acid has a pH equal to its pKa.
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