Question

Cu → CuO → CuCl2 → Cu(OH)2 → Cu SO4 → Cu

Answer 1

Объяснение:

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Answer 2

Ответ:

2Сu+O2=2CuO

CuO+2HCl=CuCl2+H2O

CuCl2+2NaOH=Cu(OH)2+2NaCl

Cu(OH)2=CuO+H2O

CuO+H2SO4=CuSO4+H2O

Answer 3

It seems like you've listed a series of chemical reactions involving copper (Cu) and various compounds. Each arrow represents a reaction step. I'll provide a brief explanation of each step in the sequence:

1. Cu (Copper): This is the starting material, elemental copper.

2. CuO (Copper(II) Oxide): Copper reacts with oxygen to form copper(II) oxide, a black solid.

3. CuCl2 (Copper(II) Chloride): Copper(II) oxide reacts with hydrochloric acid (HCl) to form copper(II) chloride, a blue-green solid.

4. Cu(OH)2 (Copper(II) Hydroxide): Copper(II) chloride reacts with sodium hydroxide (NaOH) to form copper(II) hydroxide, a blue-green precipitate.

5. CuSO4 (Copper(II) Sulfate): Copper(II) hydroxide reacts with sulfuric acid (H2SO4) to form copper(II) sulfate, a blue solution.

6. Cu (Copper): Copper(II) sulfate can be reduced back to elemental copper (Cu) through various methods, such as adding metallic zinc (Zn) or using electrolysis.

So, the overall sequence represents a series of chemical reactions that start with elemental copper and end with the regeneration of elemental copper. These reactions involve various chemical transformations, including oxidation, reduction, and precipitation.