Question

Написати схему перетворення сполук : 1. Ca-CaO-CaCl2-Ca3(PO4)2-H3PO4 2.CO2-H2CO3-CaCO3-CaO-CaSO4 3. P-P2O5-H3PO4-H2O-Ca(OH)2

Answer 1

2Ca + O2 → 2CaO
CaO + 2HCl → CaCl2 + H2O
3CaCl2 + 2H3PO4 → Ca3(PO4)2↓ + 6HCl
Ca3(PO4)2 + 3H2CO3 → 3CaCO3↓ + 2H3PO4

CO2 + H2O → H2CO3
H2CO3 + Ca → CaCO3↓ + H2↑
CaCO3 → CaO + CO2↑
CaO + H2SO4 + CaSO4 + H2O

4P + 5O2 → 2P2O5
P2O5 + 3H2O → 2H3PO4
2H3PO4 + 3K2O → 2K3PO4 + 3H2O
H2O + CaO → Ca(OH)2

Answer 2

Схема перетворення сполук:

1. Ca-CaO-CaCl2-Ca3(PO4)2-H3PO4 2. CO2-H2CO3-CaCO3-CaO-CaSO4 3. P-P2O5-H3PO4-H2O-Ca(OH)2

1. Ca-CaO-CaCl2-Ca3(PO4)2-H3PO4:

- Ca (calcium) reacts with oxygen (O) to form CaO (calcium oxide) [[1]]. - CaO reacts with hydrochloric acid (HCl) to form CaCl2 (calcium chloride) [[2]]. - CaCl2 reacts with phosphoric acid (H3PO4) to form Ca3(PO4)2 (calcium phosphate) [[3]]. - Ca3(PO4)2 can be further reacted with H3PO4 to form phosphoric acid [[4]].

2. CO2-H2CO3-CaCO3-CaO-CaSO4:

- CO2 (carbon dioxide) can dissolve in water (H2O) to form carbonic acid (H2CO3) [[5]]. - Carbonic acid can react with calcium carbonate (CaCO3) to form calcium bicarbonate (Ca(HCO3)2) [[6]]. - Calcium bicarbonate can decompose to form CaCO3 and release CO2 and H2O [[7]]. - CaCO3 can be further heated to form CaO (calcium oxide) [[8]]. - CaO can react with sulfuric acid (H2SO4) to form calcium sulfate (CaSO4) [[9]].

3. P-P2O5-H3PO4-H2O-Ca(OH)2:

- Phosphorus (P) can react with oxygen (O) to form P2O5 (phosphorus pentoxide) [[10]]. - P2O5 reacts with water (H2O) to form phosphoric acid (H3PO4) [[11]]. - Phosphoric acid can react with calcium hydroxide (Ca(OH)2) to form calcium phosphate (Ca3(PO4)2) [[12]].

Please note that these reactions are simplified representations and may not include all possible intermediate steps or conditions required for the reactions to occur.