1. Сu --> СuCl2 ---> Cu(OH)2 > СuO.
1) Сu + Cl2 ---> CuCl2
2) CuCl2 + 2NaOH > Cu(OH)2 + 2NaCl
t
3) Cu(OH)2 > CuO + H2O
2. Mg ---> MgO > MgCl2 > Mg(OH)2.
1) 2Mg + O2 ---> 2MgO
2) MgO + 2HCl > MgCl2 + H2O
3) MgCl2 + 2NaOH > Mg(OH)2 + 2NaCl
3. CuSO4 > Cu(OH)2 > CuO > CuCl2
1) CuSO4 + 2NaOH > Cu(OH)2 + Na2SO4
t
2) Cu(OH)2 > CuO + H2O
3) CuO + 2HCl > CuCl2 + H2O
2С₁₇Н₃₅COONa+H₂SO₄=Na₂SO₄+2С₁₇Н₃₅COOH↓
2С₁₇Н₃₅COO⁻+2Na⁺+2H⁺+SO₄²⁻=2С₁₇Н₃₅COOH↓+2Na⁺+SO₄²⁻
2С₁₇Н₃₅COO⁻+2H⁺=2С₁₇Н₃₅COOH↓
HCOOH+NaOH=HCOONa+H₂O
HCOO⁻+H⁺+Na⁺+OH⁻=HCOO⁻+Na⁺+H₂O
H⁺+OH⁻+H₂O
№2
C₂H₅OH+HCOOH=[H⁺]=HCOOC₂H₅+H₂O