When Does a Weak Acid Buffer Best

question 61

Multiple Choice

When does a weak acid buffer best?

• A) From one pH unit below its pK_a to its pK_a.
• B) From its pK_a to one pH unit above its pK_a.
• C) Within one pH unit of its pK_a, both above and below.
• D) Weak acids do not make good buffers at all.

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Definitions:

Accounting Break-even

The point at which total costs and total revenues are equal, leading to neither profit nor loss.

Variable Costs

Costs that vary directly with the level of output or production, such as materials and labor.

Fixed Costs

Expenses that do not change with the level of goods or services produced over a short period, such as rent or salaries.

Financial Break-even

The point at which a company's total revenues are exactly equal to its total expenses, resulting in neither profit nor loss.