The PH of a 0

question 3

Multiple Choice

The pH of a 0.095 M solution of an unknown monoprotic acid is 5.42. Calculate the K_a of the acid.

• A) 3.8 x 10^-6
• B) 3.6 x 10^-7
• C) 1.5 x 10^-10
• D) 2.6 x 10^-9
• E) 2.8 x 10^-8

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Definitions:

Variable Overhead Efficiency Variance

The difference between the actual level of activity (direct labor-hours, machine-hours, or some other base) and the standard activity allowed, multiplied by the variable part of the predetermined overhead rate.

Insufficient Demand

A situation where the quantity of a product or service desired by consumers is less than what is supplied in the market.

Excessive Inventories

A situation where a company holds more stock than what is effectively required, leading to increased storage costs and possible obsolescence.

Quantity Standard

The predetermined amount of materials, labor, and overhead that should be used for each unit of production.