$$\ce{NaOH + HAc -> NaAc + HOH}$$ The Sodium Acetate the basic salt that dissociated into acetate ions and takes an H+ in water. Applying this logic to your question gives us: $\ce{KNO2}$ is a basic salt, the $\ce{HF}$ is an acid, the $\ce{(CH3)3NHBr}$ being an ammonium salt is acidic too, the last one is an alcohol which has no effect. More @Wikipedia
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