Exhibit 2B
Contains Information on the PK's of Some Common

question 59

Multiple Choice

Exhibit 2B
Contains information on the pK's of some common buffers.
$\begin{array}{llrc}\text { Buffer } & \mathbf{p K} 1 & \mathbf{p K 2} & \mathbf{p K} 3 \\\hline \text { Acetate } & 4.75 & & \\\text { Ammonia } & 9.25 & & \\\text { Carbonic acid } & 6.37 & 10.20 & \\\text { Citric acid } & 3.09 & 4.75 & 5.41 \\\text { Formic Acid } & 3.75 & & \\\text { Phosphoric acid } & 2.14 & 7.20 & 12.4 \\\text { Pyruvic acid } & 2.50 & & \\\text { Tris } & 8.3 & &\end{array}$

-Refer to Exhibit 2B. A phosphate buffer would work well at this pH:

• A) 5.0
• B) 7.0
• C) 8.0
• D) 10.0
• E) 7.0 and 8.0

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Definitions:

Non-current Liability

Long-term financial obligations listed on a company's balance sheet that are not due within the upcoming twelve months.

Non-current Asset

Assets not expected to be converted into cash, consumed, or utilized within one year of the balance sheet date, including property, plant, and equipment.

IFRS

International Financial Reporting Standards, a set of global accounting standards developed by the International Accounting Standards Board.

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Potential liabilities that may occur depending on the outcome of a future event.