The Value of the Ionization Constant for a Weak Acid

question 11

Multiple Choice

The value of the ionization constant for a weak acid HA is 4.2 × 10^-7. What is the pH of a 0.35 M solution of this acid?

• A) 6.83
• B) 6.38
• C) 3.42
• D) 3.19
• E) 2.96

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Definitions:

Behavioral Effects

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Dopamine

A neurotransmitter in the brain that plays a major role in reward-motivated behavior, movement, and cognition.

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Prefrontal Cortex

An area at the front of the brain involved in complex behaviors, decision making, and moderating social behavior.