The PK_a of Lactic Acid Is 3

question 20

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 0.20 M and the sodium lactate concentration is 2.0 M?

• A) 2.86
• B) 3.86
• C) 4.86
• D) 7.00

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Definitions:

Transfer

The act of moving or conveying something from one place, person, or entity to another.

Capital Surplus

The amount of equity in a company that is derived from contributions by shareholders in excess of the par value of the shares.

Par Value

The nominal or face value of a stock or bond as stated by the issuer.

Cash Flow Test

A financial analysis method to determine the liquidity of a company by measuring the cash it generates or uses in its operations.