1 Zn+CL=ZnCL2 ZnCl2+2NaOH(избав)=Zn(OH)2+2NaCl Zn(OH)2==ZnO+H2O ZnO+2HNO3=Zn(NO3)2+H2O 2 2Cu+O2=2CuO CuO+2HCl=CuCl2+H2O CuCl2+2NaOH=Cu(OH)2=2NaCl Cu(OH)2==CuO+H2O 2CuO==2Cu+O2