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:

Total Cost Curve

A graphical representation of the total cost, showing how total cost depends on the quantity of output.

Marginal Cost

The rise in sum total expense from the production of one extra unit of a product or service.

Market Price

The current price at which a good or service can be bought or sold in a marketplace.

Average Total Cost

The cost per unit is calculated by dividing the sum of fixed and variable production costs by the total quantity of units produced.