Write the reaction equation: CUSO4 – CU – CUCL2 – CU (NO3) 2 – CU (OH) 2 – CUSO4 – CUO
1) CuSO4 + Fe → FeSO4 + Cu (iron (II) sulfate, copper; substitution reaction, the more active metal displaces the less active one in the salt).
2) Cu + Сl2 → CuCl2 (copper (II) chloride; compound reaction).
3) CuCl2 + 2AgNO3 → Cu (NO3) 2 + 2AgCl (copper (II) nitrate, silver chloride; exchange reaction, the reaction proceeds, since a precipitate is formed in the form of silver chloride).
4) Cu (NO3) 2 + 2NaOH → Cu (OH) 2 + 2NaNO3 (copper (II) hydroxide, sodium nitrate; exchange reaction, the reaction proceeds, since a precipitate is formed in the form of copper (II) hydroxide).
5) Cu (OH) 2 + H2SO4 → CuSO4 + 2H2O (copper (II) sulfate; exchange reaction, the reaction proceeds, since a weak electrolyte is formed in the form of water).
6) 2CuSO4 → 2CuO + 2SO2 + O2 (conditions: temperature; copper oxide, sulfur (IV) oxide; decomposition reaction).