1. Chemistry
2. Physical Chemistry
3. 303308

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Is H2O always the base, for example in the following:

SO4^2- + H2O --> HSO4^- + OH^-

I said SO4^2- is the acid and H2O is the base

for CH3COOH + H2O --> CH3COO^- + H3O^+

I said...CH3COOH is acid and again H2O is the base ?