1) Ca + O2 -> CaO (Calcium reacts with oxygen to form calcium oxide) 2) CaO + H2O -> Ca(OH)2 (Calcium oxide reacts with water to form calcium hydroxide) 3) Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O (Calcium hydroxide reacts with sulfuric acid to form calcium sulfate and water) 4) 3CaSO4 + 2H3PO4 -> Ca3(PO4)2 + 3H2SO4 (Calcium sulfate reacts with phosphoric acid to form calcium phosphate and sulfuric acid)
1) Ca + O2 -> CaO (Calcium reacts with oxygen to form calcium oxide)
2) CaO + H2O -> Ca(OH)2 (Calcium oxide reacts with water to form calcium hydroxide)
3) Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O (Calcium hydroxide reacts with sulfuric acid to form calcium sulfate and water)
4) 3CaSO4 + 2H3PO4 -> Ca3(PO4)2 + 3H2SO4 (Calcium sulfate reacts with phosphoric acid to form calcium phosphate and sulfuric acid)