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Question:

aluminum nitrate in water: neutral, basic, or acidic?

i know aluminum nitrate will dissociate, and also that there is no way that the nitrate will react to make the solution basic or neutral. But what about the aluminum ion? Does it take OH- from water to make [Al(OH)4]- and make the solution acidic? Does it somehow take protons and make a basic solution? My teacher said its not neutral, so I'm leaning towards an acidic solution. Thanks!

Answer:

Aluminum nitrate is the salt produced by the reaction of aluminum hydroxide and nitric acid. Nitric acid is a strong acid. Aluminum hydroxide is a realtively weak base. So the salt will be acidic.

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