Ammonia (NH₃) Acts as a Weak Base in Aqueous Solution

question 57

Multiple Choice

Ammonia (NH₃) acts as a weak base in aqueous solution. What is the acid that reacts with this base when ammonia is dissolved in water?

• A) none, there are no acids in pure water
• B) H₂O
• C) NH₄⁺
• D) trick question, because no acids are present, ammonia cannot act as a base
• E) oxygen that always is dissolved in water

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Definitions:

Z-score

A numerical indicator that shows how a value compares to the average of a set of values, expressed as the number of standard deviations away from the mean.

Normally Distributed

A type of continuous probability distribution for a real-valued random variable, characterized by a symmetric bell-shaped curve.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how much the individual values deviate from the mean.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, representing an average distance from the mean.