We are given a number of substances: 1) H2O, 2) H2SO4, 3) NaOH, 4) CaO, 5) CO2 and 6) CuSO4 and we need to draw up the reaction equations with the substances with which barium hydroxide reacts.
Barium hydroxide Ba (OH) 2 does not react with water, so we proceed to writing the reaction equation with the second substance:
2. Ba (OH) 2 + H2SO4 = BaSO4 + 2H2O.
Barium hydroxide does not react with sodium hydroxide and calcium oxide.
5. Ba (OH) 2 + CO2 = BaCO3 + H2O.
And the last substance:
6. Ba (OH) 2 + CuSO4 = BaSO4 + Cu (OH) 2.
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