Question

Cu➡️CuO➡️Cucl2➡️Cu(OH)2➡️CuO

Answer 1

Добрый день!

Дано:

Cu➡️CuO➡️CuCl2➡️Cu(OH)2➡️CuO

Начнем по-порядку:

1)Cu➡️CuO

2Cu+O2=2CuO

2)CuO➡️CuСl2

CuO+2HCl=CuCl2+H2O

3)CuCl2➡️Cu(OH)2

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

4)Cu(OH)2➡️CuO

Cu(OH)=CuO+H2O

Answer 2

The series of reactions you've provided involves the transformation of copper (Cu) through various compounds. Let's go through each step:

1. Cu ➡️ CuO: This reaction represents the oxidation of copper. Copper (Cu) reacts with oxygen (O₂) in the air to form copper(II) oxide (CuO).

2. CuO ➡️ CuCl₂: In this step, copper(II) oxide (CuO) reacts with hydrochloric acid (HCl) to produce copper(II) chloride (CuCl₂) and water (H₂O). The reaction can be represented as follows: CuO + 2HCl ➡️ CuCl₂ + H₂O

3. CuCl₂ ➡️ Cu(OH)₂: Copper(II) chloride (CuCl₂) reacts with sodium hydroxide (NaOH) to yield copper(II) hydroxide (Cu(OH)₂) and sodium chloride (NaCl). The reaction equation is as follows: CuCl₂ + 2NaOH ➡️ Cu(OH)₂ + 2NaCl

4. Cu(OH)₂ ➡️ CuO: Copper(II) hydroxide (Cu(OH)₂) undergoes thermal decomposition to form copper(II) oxide (CuO) and water (H₂O). The reaction can be represented as: Cu(OH)₂ ➡️ CuO + H₂O

So, the overall reaction sequence can be summarized as: Cu ➡️ CuO ➡️ CuCl₂ ➡️ Cu(OH)₂ ➡️ CuO