Question

запишите уравнения следующих реакций
1. Ca->CaCl2
2.Ca->CaS
3.Ca->CaSO4
4.Ca->CaO->Ca(OH)2

Answer 1

1) Ca+2HCl=CaCl2+H2
2) Ca+S=CaS
3) Ca+H2SO4=CaSO4+H2
4)
Ca->CaO->Ca(OH)2
2Ca+O2=2CaO
CaO+H2O=Ca(OH)2

Answer 2

1. Ca+2HCl=CaCl2+H2
2. Ca+H2S=CaS+H2
3. Ca+H2SO4=CaSO4+H2
4. 2Ca+O2=2CaO
CaO+H2O=Ca(OH)2