A buffer must be a combination of a weak acid or base and a salt that contains the conjugate of that weak acid or base. A buffer is a solution that can maintain a nearly constant pH if it is diluted, or if relatively small amounts of strong acids or bases are added. A buffer solution can be made by mixing a weak acid with one of its salts OR mixing a weak base with one of its salts.
A more technical way of saying this is that a buffer solution consists of a mixture of a weak acid and its conjugate base OR a weak base and its conjugate acid. Which of the following set of solutions could be used to prepare a buffer solution? Jan 30, Related questions How do I determine the molecular shape of a molecule?
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Define buffer. What two related chemical components are required to make a buffer? Can a buffer be made by combining a strong acid with a strong base? Why or why not? Which combinations of compounds can make a buffer? Assume aqueous solutions. For each combination in Exercise 3 that is a buffer, write the chemical equations for the reactions of the buffer components when a strong acid and a strong base is added. For each combination in Exercise 4 that is a buffer, write the chemical equations for the reactions of the buffer components when a strong acid and a strong base is added.
What different buffer solutions can be made from these substances? Explain why NaBr cannot be a component in either an acidic or a basic buffer. Two solutions are made containing the same concentrations of solutes. Which solution should have the larger capacity as a buffer?
A buffer is the combination of a weak acid or base and a salt of that weak acid or base. Technically, a buffer can be made from any two components. The phosphate buffer should have the larger capacity. Previous Section. Table of Contents. Next Section. Correctly identify the two components of a buffer. Example 15 Which combinations of compounds can make a buffer solution? The combination of these two solutes would make a buffer solution. HCl is a strong acid, not a weak acid, so the combination of these two solutes would not make a buffer solution.
Because it is not listed in Table The compound CH 3 NH 3 Cl is a salt made from that weak base, so the combination of these two solutes would make a buffer solution. NH 3 is a weak base, but NaOH is a strong base.
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