1 - CuO, H2SO4, H2O
2 - NaOH, HCl, NaCl, H2O
3 - Cu, K
4 - BaCl2, H2SO4, HCl
5 - NaOH, Fe(OH)2, NaCl
6 - HCl, H2O
1 - CuO, H2SO4, H2O
2 - NaOH, HCl, NaCl, H2O
3 - Cu, K
4 - BaCl2, H2SO4, HCl
5 - NaOH, Fe(OH)2, NaCl
6 - HCl, H2O