Write the reaction equations BA – BAO – BA (OH) 2- BACO3 – BA (NO3) 2 I BA (OH) 2 – BAO – BACL2

We compose the reaction equations:
2Ba + O2 = 2BaO – compound reaction;
BaO + H2O = Ba (OH) 2 – compound reaction;
Ba (OH) 2 + CO2 = BaCO3 + H2O – ion exchange;
BaCO3 + 2HNO3 = Ba (NO3) 2 + CO2 + H2O – ion exchange;
Ba (NO3) 2 + 2NaOH = Ba (OH) 2 + 2NaNO3 – ion exchange, barium hydroxide precipitate is formed;
Ba (OH) 2 = BaO + H2O – decomposition, occurs when heated;
BaO + 2HCl = BaCl2 + H2O – ion exchange;
The reaction equations confirm the genetic relationship of oxides, hydroxides, and salts.
Barium salts are toxic compounds.