Chapter 15.3: Buffers

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4 Terms

1
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What is the common ion effect?

The effect of adding a common ion to a solution that results in the reduction of the solubility of an ionic compound.

2
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What is buffering capacity?

The amount of acid or base a buffer can neutralize without destroying its effectiveness.

3
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How does buffering capacity increase?

  • Increases with increasing absolute concentration of buffer components

    • A concentrated buffer can neutralize more acid/base than a dilute buffer

  • As the [base]:[acid] ratio approaches 1, the buffering capacity be most effective

4
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What is a buffer?

A solution whose pH value (i.e. concentration of H3O+ ions) will not change much when a small or moderate amount of acid or base is added to it.