The PK_a of Lactic Acid Is 3

question 8

Multiple Choice

The pK_a of lactic acid is 3.86. What is the pH of a buffer in which the lactic acid concentration is 2.0 M and the sodium lactate concentration is 0.50 M?

• A) 2.86
• B) 3.26
• C) 4.46
• D) 4.86

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Definitions:

Manufacturing Overhead

All indirect costs associated with the production process, including utilities, maintenance, and factory equipment depreciation.

Predetermined Overhead Rates

Predetermined overhead rates are calculated by dividing estimated overhead costs by an allocation base, such as direct labor hours, used to assign overhead costs to products or services.

Manufacturing Overhead

All indirect costs associated with the manufacturing process, including indirect labor, materials, and other expenses not directly tied to production.

Machine-Hours

The total time, calculated in hours, that machinery is operational and working on production tasks during a given period.