CuSO4 + 2KOH = Cu(OH)2 + K2SO4
Cu2 ++SO42-+2K++2OH- = Cu(OH)2+2K++SO42-
Cu2++2OH- = Cu(OH)2
Cu(OH)2+ K2O = CuO+ 2KOH
Cu2 + + 2OH- +2K++O2- = Cuo + 2K++ 2 OH -
Cu2 ++ O2- = CuO
CuSO4 + 2KOH = Cu(OH)2 + K2SO4
Cu2 ++SO42-+2K++2OH- = Cu(OH)2+2K++SO42-
Cu2++2OH- = Cu(OH)2
Cu(OH)2+ K2O = CuO+ 2KOH
Cu2 + + 2OH- +2K++O2- = Cuo + 2K++ 2 OH -
Cu2 ++ O2- = CuO