Question

1) Cu CuO CuCl(2) Cu(OH)2 CuO CuSO(4) 2) AlCl(3) Al(OH)3 Al2O3 Al2(SO4)3 Al(OH)3 Al(OH)2Cl 3) Na2O NaOH NaHSO4 Na2SO4 4) CaCO3 CaO Ca(OH)2 Ca(HCO3)2 CO2 помогите решать пожалуйстаа))

Answer 1

Cu+O2=CuO............

Answer 2

1) Cu → CuO→ CuCl(2)→ Cu(OH)2 
→CuO →CuSO(4) 
2) AlCl(3) → Al(OH)3→ Al2O3→ Al2(SO4)3 →Al(OH)3→ Al(OH)2Cl
3) Na2O→ NaOH→ NaHSO4 →Na2SO4 
4) CaCO3→ CaO →Ca(OH)2 →Ca(HCO3)2 →CO2 

Answer 3

1) Cu CuO CuCl(2) Cu(OH)2 CuO CuSO(4)

The given sequence represents a series of chemical reactions involving copper (Cu) and various compounds. Here is a breakdown of the reactions:

1. Cu + O2 → CuO: Copper reacts with oxygen to form copper(II) oxide (CuO). 2. CuO + 2HCl → CuCl2 + H2O: Copper(II) oxide reacts with hydrochloric acid to form copper(II) chloride (CuCl2) and water (H2O). 3. CuCl2 + 2NaOH → Cu(OH)2 + 2NaCl: Copper(II) chloride reacts with sodium hydroxide to form copper(II) hydroxide (Cu(OH)2) and sodium chloride (NaCl). 4. Cu(OH)2 → CuO + H2O: Copper(II) hydroxide decomposes to form copper(II) oxide and water. 5. CuO + H2SO4 → CuSO4 + H2O: Copper(II) oxide reacts with sulfuric acid to form copper(II) sulfate (CuSO4)