Exhibit 2B Contains Information on the PK's of Some Common

question 5

Multiple Choice

Exhibit 2B Contains information on the pK's of some common buffers. Which of the following is important to know when deciding if a given buffer will be effective for an experiment?

• A) the pK_a of the buffer compound
• B) the buffer capacity
• C) the concentration of the buffer
• D) whether the experiment is likely to generate hydrogen ions or hydroxide ions
• E) all of these are important considerations

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Definitions:

Net Operating Income

The income generated from normal business operations after deducting operating expenses but before interest and taxes.

Contribution Format

A type of income statement that separates variable costs from fixed costs to show the contribution margin.

Income Statement

A financial statement that shows a company's revenues, expenses, and net income or loss over a specific period of time.

Total Contribution Margin

The difference between sales revenue and variable costs, indicating the total amount available to cover fixed expenses and generate profit.