Write down the equations of all possible reactions between the following substances: barium nitrate, nartrium hydroxide, copper (II) sulfate, hydrochloric acid.
substances: Ba (NO3) 2; NaOH; CuSO4; HCl
1) Ba (NO3) 2 + CuSO4 = Cu (NO3) 2 + BaSO4 (sediment)
2) NaOH + HCl = NaCl + H2O
3) CuSO4 + 2NaOH = Na2SO4 + Cu (OH) 2 (precipitate)
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