а)
2Ca + O2 = 2CaO
CaO + H20 = Ca(OH)2
Ca(OH)2 + 2HCl = CaCl2 + 2H2O
б)
CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2NaON = Cu(OH)2 + 2NaCl
Cu(OH)2 + H2SO4 = CuSO4 + 2H2O
а) Ca = CaO = Ca(OH)2 = CaCl2
2Сa+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HCl=CaCl2+2H2O
б) CuO = CuCl2 = Cu(OH)2 = CuSO4
CuO+2HCl=CuCl2+H2O
CuCl2+2NaOH=Cu(OH)2+2NaCl
Cu(OH)2+H2SO4=CuSO4+2H2O
а)
2Ca + O2 = 2CaO
CaO + H20 = Ca(OH)2
Ca(OH)2 + 2HCl = CaCl2 + 2H2O
б)
CuO + 2HCl = CuCl2 + H2O
CuCl2 + 2NaON = Cu(OH)2 + 2NaCl
Cu(OH)2 + H2SO4 = CuSO4 + 2H2O
а) Ca = CaO = Ca(OH)2 = CaCl2
2Сa+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HCl=CaCl2+2H2O
б) CuO = CuCl2 = Cu(OH)2 = CuSO4
CuO+2HCl=CuCl2+H2O
CuCl2+2NaOH=Cu(OH)2+2NaCl
Cu(OH)2+H2SO4=CuSO4+2H2O