Make the reaction equations: 1) Ba → BaO → Ba (OH) 2 → BaCo3 → BaCl2 → BaSO4

Make the reaction equations: 1) Ba → BaO → Ba (OH) 2 → BaCo3 → BaCl2 → BaSO4 2) P → P2O5 → H3PO4 → Ca3 (PO4) 2 → H3PO4 3) C → CO2 → NaCO3 → CO2 → CaCO3 → CaO

1).

– Combustion of metallic barium:

2Ва + О2 = 2ВаО.

– Hydroxide formation:

BaO + H2O = Ba (OH) 2.

– Obtaining carbonate:

Ba (OH) 2 + CO2 = BaCO3 + H2O.

– Acid decomposition:

BaCO3 + 2HCI = BaCI2 + CO2 + H2O.

– Reaction with sulfuric acid:

ВаСІ2 + H2SO4 = BaSO4 + 2HCl.

2).

– Burning phosphorus:

P2 + 2.5O2 = P2O5.

– Formation of phosphoric acid:

P2O5 + 3H2O = 2H3PO4.

– Reaction of acid with calcium hydroxide suspension:

2H3PO4 + 3Ca (OH) 2 = Ca3 (PO4) 2 + 6H2O.

– Reaction of phosphate with sulfuric acid:

Ca3 (PO4) 2 + 3H2SO4 = 2H3PO4 + 3CaSO4.

3).

– reaction of carbon monoxide with hot coal:

2C + 2CO = 2CO2.

– reaction with alkali:

NaOH + CO2 = Na2CO3.

– Thermal decomposition:

Na2CO3 = CO2 + Na2O.

– Precipitation of carbonate with carbon dioxide:

CO2 + Ca (OH) 2 = CaCO3 + H2O.

– decomposition on heating:

CaCO3 = CaO + CO2.