Question

Cu -> CuO -> CuCl2 -> Cu(OH)2 -> CuO -> Cu -> CuSO4 -> Cu(OH)2

Answer 1

2Cu+O2 -> 2CuO

CuO+2HCl -> CuCl2+H2O

CuCl2+2KOH -> Cu(OH)2+2KCl

Cu(OH)2 -> CuO +H2O

2CuO ->2 Cu+O2

Cu +H2SO4-> CuSO4+H2

CuSO4 +2KOH-> Cu(OH)2+K2SO4

Answer 2

1) 2cu+o_{2}=2Cuo

2) СиО2+2HCl=CuCl2+H20

3) CuCl+H2O=Cu(OH)2+HCl

4) Co(OH)2=темп.=СuO+H2O

5) CuO+H2=Cu+ H2O

6)Cu+2H2SO4=CuSO4+SO2+2H2