1) 2Ca+O2 = 2CaO
2) CaO + H2O = Ca(OH)2
3) Ca(OH)2 + 2HCl = CaCl2 + 2H2O
Ионное уравнение: Ca2+ + 2OH- + 2H+ + 2Cl - = Ca2+ + 2Cl- + 2H2O
Сокращенное: OH- + H+ = H2O
4) Ca + H2SO4 = CaSO4 + H2
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Answers & Comments
1) 2Ca+O2 = 2CaO
2) CaO + H2O = Ca(OH)2
3) Ca(OH)2 + 2HCl = CaCl2 + 2H2O
Ионное уравнение: Ca2+ + 2OH- + 2H+ + 2Cl - = Ca2+ + 2Cl- + 2H2O
Сокращенное: OH- + H+ = H2O
4) Ca + H2SO4 = CaSO4 + H2