Which of the listed substances will barium hydroxide react with: H2O, H2SO4, NaOH, CaO, CO2, CuSO4

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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