If the K_b of a Certain Aromatic Amine Is 2

question 25

Multiple Choice

If the K_b of a certain aromatic amine is 2.24 × 10^-9, what is the pK_b?

• A) 2.24
• B) 9.22
• C) -8.65
• D) 8.65

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Definitions:

Direct Labour Rate Variance

The difference between the actual labor costs incurred and the standard labor costs for the actual production achieved.

Standard Quantity

The predetermined amount of material or inputs expected to be used in the production of a product or service.

Standard Price

The predetermined cost of a single unit of input, such as materials or labor, used in standard costing practices.

Direct Labour

The labor costs for employees directly involved in the production of goods or services.