A Buffer Contains Equal Concentrations of NH₃(aq) and NH₄Cl(aq)

question 14

Multiple Choice

A buffer contains equal concentrations of NH₃(aq) and NH₄Cl(aq) .What is the pH of the buffer? (K_b (NH₃) = 1.8 * 10^-5)

• A) 9.26
• B) 4.74
• C) 7.00
• D) 13.00

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Definitions:

Semantic Encoding

The process of encoding sensory input that has particular meaning or can be applied to a context, into memory.

Short-Term Memory

The part of the memory system where small amounts of information can be stored for a short period of time.

Sensory Memory

The shortest-term element of memory, which acts as a buffer for stimuli received through the senses, lasting up to several seconds.

Long-Term Memory

Refers to the phase of memory responsible for storing information for an extended period, ranging from a few minutes to a lifetime.