Odpowiedź :
Witaj :)
[tex]1.\ 2Ca+O_2\rightarrow 2CaO\\\\2.\ CaO+H_2SO_4\rightarrow CaSO_4+H_2O\\\\3.\ Ca+2H_2O\rightarrow Ca(OH)_2+H_2\uparrow \\\\4.\ CaO+H_2O\rightarrow Ca(OH)_2\\\\5.\ Ca(OH)_2+H_2SO_4\rightarrow CaSO_4+2H_2O\\\\6.\ Ca(OH)_2+2HNO_3\rightarrow Ca(NO_3)_2+2H_2O[/tex]
1) 2Ca + O₂ ---> 2CaO
2) CaO + H₂SO₄ ---> CaSO₄ + H₂O
3) Ca + 2H₂O ----> Ca(OH)₂ + H₂
4) CaO + H₂O ----> Ca(OH)₂
5) Ca(OH)₂ + H₂SO₄ ---> CaSO₄ + 2H₂O
6) Ca(OH)₂ + 2HNO₃ --- > Ca(NO₃)₂ + 2H₂O