Write the reaction equation: P2O5 → H3PO4 → Ba3 (PO4) 2 → BaCl → AgCl

P2O5 + 3H2O = 2H3PO4 – when phosphorus oxide interacts with water, a combination reaction occurs and orthophosphoric acid is formed.
3Ba (OH) 2 + 2H3PO4 = Ba3 (PO4) 2 + 3H2O – when barium hydroxide interacts with orthophosphoric acid, an exchange reaction occurs and a barium salt and water are formed.
2Na3PO4 + 3BaCl2 = Ba3 (PO4) 2 + 6NaCl – the sodium salt interacts with the barium salt, an exchange reaction occurs and two new salts are formed.
2AgNO3 + BaCl2 → 2AgCl + Ba (NO3) 2 – the silver salt interacts with the barium salt, an exchange reaction occurs and two new salts are formed.



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