A Buffer System Is Set Up with [HA] 

question 37

Multiple Choice

A buffer system is set up with [HA]  2[A^]. If pK_a  5.5, what is the pH of the buffer?

• A)5.2
• B)5.8
• C)7.5
• D)3.5
• E)7.0

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Definitions:

Complement

In mathematics, a complement refers to the elements not in the subset of interest within a given set. In general language, it means something that completes or goes well with something.

P(A And B)

The probability that events A and B both occur.

P(A Or B)

The probability that at least one of two events, A or B, will occur.

Probability

A measure of the likelihood that an event will occur, expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.