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HPO4-2 is an acid and a base.
however when mixed with NO2- (Base) then HPO4-2 must be an acid.
NH2CH3 can be an acid or a base depending on what it is mixed with.
when a base is mixed with an acidic solution why does neutralization occurs?
Vinegar is an acid because when mixed with a base such as baking soda it will fizz.
when an acid and a base combine, salt and water are formed. This process of reaction of an acid and base is called neutralisation.