- \( \mathrm{NH}_{3}(\mathrm{aq}) \) is a weak base.
- \( \mathrm{HNO}_{3}(\mathrm{aq}) \) is a strong acid.
- \( \mathrm{NaNO}_{2}(\mathrm{aq}) \) is a salt of a strong base (NaOH) and a weak acid (HNO2), which makes it a basic solution.
- \( \mathrm{CH}_{3}
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