A 655-ML Sample of 0

question 135

Multiple Choice

A 65.5-mL sample of 0.14 M HNO₂ (K_a = 4.0  10^-4) is titrated with 0.11 M NaOH. What is the pH after 26.8 mL of NaOH has been added?

• A) 10.28
• B) 7.00
• C) 3.72
• D) 2.91
• E) 3.07

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Definitions:

Diminishing Marginal Returns

A principle stating that as more of a production input is added, holding all others constant, the resulting additional output will eventually decrease.

Range

The difference between the highest and lowest values in a data set, often used to measure variability.

Average Product

The output per unit of input, typically calculated for labor or capital in the production process.

Units of Labor

Measurements that represent the amount of work or effort by labor, typically used in the context of production processes.