2Ca+O2=2CaO CaO+H2O=Ca(OH)2 Ca(OH)2+ CuCl2=Cu (OH) 2 +CaCl2
обьясниитть сущность ОВР!!!
2ca+o2=2cao cao+h2o=ca(oh)2 ca(oh)2+2nacl=cacl2+2naoh
2Ca +O2= 2CaO CaO + H2O = Ca (OH) 2 Ca (Oh) 2 + CuCl2 = Cu (OH) 2 + CaCl2