Cu Cl 2 + N 2 OH => KOH + H 2 SO 4 => Na 2 CO 3 + HCl =>
Cu Cl2+Na OH=Cu(OH)2+2NaCl
2KOH +H2SO4=K2SO4+2H2O
Na2CO3 + 2HCl=2Na Cl +H2CO3