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SAT Chemistry

Category - Multiple Choice

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HNO₂(aq) + H₂O --> NO₂-(aq) + H₃0⁺(aq)

In this reaction, NO₂-(aq) is best classified as a(n)

Acid
Base
Cation
Salt
Electrically neutral species

Explanation

Answer: Base

In this reaction, HNO₂(aq) acts as an acid by releasing protons into solution. Each acid must have a conjugate base, so NO₂-(aq) is best classified as a base.

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