Multiple Choice
Which of the following is the correct name for the acid with the formula HNO_3?
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3. Chemical Reactions
Naming Acids
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Which of the following statements correctly describes the acid HNO2?
A
HNO2 is a strong acid.
B
HNO2 is a strong base.
C
HNO2 is a weak acid.
D
HNO2 is a neutral compound.
Verified step by step guidance1
Identify the chemical species HNO2, which is nitrous acid, a common oxyacid of nitrogen.
Recall the definitions of strong acid, weak acid, strong base, and neutral compound: a strong acid completely dissociates in water, a weak acid partially dissociates, a strong base completely dissociates to produce OH⁻ ions, and a neutral compound neither donates nor accepts protons significantly.
Consider the known acid strength of HNO2: it does not fully dissociate in aqueous solution, indicating it is not a strong acid.
Since HNO2 donates protons (H⁺) but does not fully dissociate, it fits the definition of a weak acid rather than a strong acid or base.
Conclude that the correct description of HNO2 is that it is a weak acid.
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