1. Đồng hydroxit
2 . Nitrous Oxide
3 . Barium Sulfate
4. Hydro Sulfide

-  Cu(OH)₂: copper(II) hydroxide

-  N₂O: dinitrogen oxide

-  BaSO₄: barium sulfate

-  H₂S: acid sulfide

\(1.Fe+H_2SO_4\rightarrow FeSO_4+H_2\\ 2.FeSO_4+2NaOH\rightarrow Fe\left(OH\right)_2+Na_2SO_4\\ 3.Fe\left(OH\right)_2+2HCl\rightarrow FeCl_2+2H_2O\\ 4.FeCl_2+2AgNO_3\rightarrow Fe\left(NO_3\right)_2+2AgCl\)

1:Fe+H2SO4->FeSO4+H2

2:FeSO4+BaCl2->BaSO4+FeCl2

3:2KOH+FeCl2->Fe(OH)2+2KCl

4: Fe(OH)2->(t*)FeO+H2O

5:FeO+CO->(t*)Fe+CO2

P=> 1→1​ P2O5 2→2​ + H3PO4

H3PO4 3→
​=>  Na3PO4 4→
​+  Ca3(PO4)2

(1) 4P + 5O2 ��→to​ 2P2O5

(2) P2O5 + 3H2O → 2H3PO4

(3) H3PO4 + NaOH → Na3PO4 + H2O

(4) 2Na3PO4 + 3CaCl2 → 6NaCl + Ca3(PO4)2

CuO: copper(II) oxide K₂O: potassium oxide P₂O₅: diphosphorus pentoxide NO: nitrogen monoxide

CuO: copper(II) oxide. K2O: potassium oxide. P2O5: diphosphorus pentoxide. NO: nitrogen monoxide.

b, Acid là:
+ HCL:  hydrochloric acid
+ H₂SO₄: sulfuric acid
+ HNO₃: nitric acid
c, Base là:
+ KOH: potassium hydroxide
+ Ba(OH)_2: barium hydroxide
+ Cu(OH)₂ : copper (II) hydroxide
d, Muối là: 
+ Na₂CO₃: sodium cacbonat
+ CaSO₃ : calcium sunfit
+ NH₄Cl : ammonium chloride
+ NaHCO₃: sodium hydrogen carbonate
+ CH₃COONa: sodium acetat

Oxide acid: CO₂ , SO₂, SO₃

Oxide bazo: CuO, Na₂O, 

Oxide lưỡng tính: Al₂O₃

a) Dần xuất hiện kết tủa trắng.

\(CaCl_2+2AgNO_3\rightarrow Ca\left(NO_3\right)_2+2AgNO_3\)

\(b)n_{CaCl_2}=\dfrac{2,22}{111}=0,02mol\\ n_{AgNO_3}=\dfrac{1,7}{170}=0,01mol\\ \Rightarrow\dfrac{0,02}{1}< \dfrac{0,01}{2}\Rightarrow CaCl_2.dư\\ CaCl_2+2AgNO_3\rightarrow Ca\left(NO_3\right)_2+2AgCl\)

0,005        0,01                0,005                  0,01

\(m_{AgCl}=0,01.143,5=1,435g\\ c)C_{M_{Ca\left(NO_3\right)_2}}=\dfrac{0,005}{0,07}=\dfrac{1}{14}M\\ C_{M_{CaCl_2.dư}}=\dfrac{0,02-0,005}{0,07}=\dfrac{3}{14}M\)

Base kiềm: KOH

Base kiềm thổ: Ba(OH)₂

Các base kiềm là: \(KOH,Ba\left(OH\right)_2\)