You Have 500

question 83

Multiple Choice

You have 500.0 mL of a buffer solution containing 0.20 M acetic acid (CH₃COOH) and 0.30 M sodium acetate (CH₃COONa) . What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution [K_a = 1.8 * 10^-5]

• A) 4.41
• B) 4.74
• C) 4.56
• D) 4.92
• E) 5.07

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Definitions:

Dependent Variable

In an experiment or study, it is the variable that is tested and measured, and it is expected to change as a result of changes in the independent variable.

Straight Line

In the context of graphs, a linear representation that exhibits a constant rate of change between two variables.

Horizontal Change

A term that does not have a standard definition in economics; it might be a misinterpretation or miscommunication of a concept. NO.

Vertical Change

A movement along the y-axis in a graph, which in economic terms can represent changes in price or quantity depending on the context.