A Solution Is Prepared by Adding 100 ML of 0

question 53

Multiple Choice

A solution is prepared by adding 100 mL of 0.2 M hydrochloric acid to 100 mL of 0.4 M sodium formate. Is this a buffer solution, and if so, what is its pH?

• A)It is a buffer, pH > pK _a of formic acid.
• B)It is a buffer, pH < pK _a of formic acid.
• C)It is a buffer, pH = pK _a of formic acid.
• D)It is a buffer, pH = pK _b of sodium formate.
• E)Since hydrochloric acid is a strong acid, this is not a buffer.

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Definitions:

Explicit Costs

Direct, out-of-pocket payments made for operations or production, such as wages, rent, and materials.

Average Fixed Cost

The constant expenses associated with production (expenses unaffected by output levels) divided by the volume of production.

Total Fixed Cost

The sum of all costs that do not change with the level of output or activity over a short period, such as rent, salaries, and equipment maintenance costs.

Average Total Cost

The total cost of production divided by the number of units produced.