Which salt is formed when aqueous NH4OH reacts with HNO3?

• A. NH4NO2
• B. NaNO3
• C. NH4NO3
• D. KNO2

Answer: (C)

Verified step by step guidance

1. Identify the reactants: aqueous NH4OH (ammonium hydroxide) is a weak base, and HNO3 (nitric acid) is a strong acid.
2. Recognize that when an acid reacts with a base, they undergo a neutralization reaction to form a salt and water.
3. Write the neutralization reaction: \(\mathrm{NH_4OH + HNO_3 \rightarrow NH_4NO_3 + H_2O}\).
4. Understand that the salt formed consists of the cation from the base (NH4\(\textsuperscript{+}\)) and the anion from the acid (NO3\(\textsuperscript{−}\)), resulting in ammonium nitrate (NH4NO3).
5. Confirm that the other options either contain incorrect ions or do not correspond to the products of this acid-base reaction.