K nha !

Mg + H₂SO₄ -------> MgSO₄ + H₂

MgSO₄ + BaCl₂ --------> MgCl₂ + BaSO₄

MgCl₂ + 2KNO₃ -------> 2KCl + Mg(NO₃)₂

Mg(NO₃)₂ + 2NaOH ------> Mg(OH)₂ + 2NaNO₃

Mg(OH)₂ --------> MgO + H₂O

MgO + H₂SO₄ -------> MgSO₄ + H₂O

\(MgCl_2\rightarrow Mg+Cl_2\uparrow\)

\(2Mg+O_2\rightarrow2MgO\)

\(MgO+H_2SO_4\rightarrow MgSO_4\downarrow+H_2O\)

\(MgSO_4+Ba\left(NO_3\right)2\rightarrow Mg\left(NO_3\right)_2+BaSO_4\downarrow\)

\(Mg\left(NO_3\right)_2+2NaOH\rightarrow Mg\left(OH\right)_2\downarrow+2NaNO_3\)

\(Mg\left(OH\right)_2\rightarrow MgO+H_2O\)

A:

\(Cu\left(OH\right)_2--to->CuO+H_2O\)

\(CuO+2HCl-->CuCl_2+H_2O\)

\(CuCl_2+2NaOH-->Cu\left(OH\right)_2+2NaCl\)

\(Cu\left(OH\right)_2+H_2SO_4-->CuSO_4+2H_2O\)

B:

\(Mg\left(OH\right)_2--to->MgO+H_2O\)

\(MgO+2HCl-->MgCl_2+H_2O\)

\(MgCl_2+2NaOH-->Mg\left(OH\right)_2+2NaCl\)

\(Mg\left(OH\right)_2+H_2SO_4-->MgSO_4+2H_2O\)

A: Cu(OH)₂ \(\underrightarrow{t^o}\) CuO + H₂O

CuO + 2HCl \(\rightarrow\) CuCl₂ + H₂O

CuCl₂ +2 NaOH \(\rightarrow\) Cu(OH)₂ + NaCl

Cu(OH)₂ + H₂SO₄ \(\rightarrow\) CuSO₄ + 2H₂O

B: Mg(OH)₂ \(\underrightarrow{t^o}\) 2MgO + H₂O

MgO + 2HCl \(\rightarrow\) MgCl₂ + H₂O

MgCl₂ + 2NaOH \(\rightarrow\) Mg(OH)₂ + NaCl

Mg(OH)₂ + H₂SO₄ \(\rightarrow\) MgSO₄ + 2H₂O

Giải được câu A rồi thì câu B làm tương tự thôi

a) Fe+Cl3\(\rightarrow\)FeCl3

FeCl3+3NaOH\(\rightarrow\) Fe(OH)3\(\downarrow\)+3NaCl

2Fe(OH)3\(\underrightarrow{t^o}\) Fe2O3+3H2O

Fe2O3+3H2\(\underrightarrow{t^o}\) 3Fe+3H2O

Fe+2HCl\(\rightarrow\) FeCl2+H2

b)2Mg+O2\(\underrightarrow{t^0}\) 2MgO

MgO+H2SO4\(\rightarrow\) MgSO4+H2O

MgSO4+Ba(NO3)2\(\rightarrow\) BaSO4\(\downarrow\) Mg(NO3)2

Mg(NO3)2+2NaOH\(\rightarrow\) Mg(OH)2\(\downarrow\) 2NaNO3

Mg(OH)2+2HCl\(\rightarrow\) MgCl2+2H2O

c) ý này giống ý b thôi bạn.

Chúc bạn học tốt!

Cảm ơn pạn💕💕💕

1) H₂SO₄ + 2NaOH -> Na₂SO₄ + 2H₂O.
2) H₂SO₄ + Mg(OH)₂-> Mg(OH)₂ +2H₂O.
3)2HNO₃ + Zn(OH)₃ -> Zn(NO3)₂ + 2H₂O.

1. \(H_2SO_4\)+ NaOH --> \(Na_2SO_4\)+ \(H_2O\)
\(H_2SO_4\)+ 2NaOH --> \(Na_2SO_4\)+\(H_2O\)
\(H_2SO_4\)+ 2NaOH \(\rightarrow\) \(Na_2SO_4\)+2\(H_2O\)
2. \(H_2SO_4\)+ \(Mg\left(OH_2\right)\)--> \(MgSO_4\)+\(H_2O\)
\(H_2SO_4\)+\(Mg\left(OH_2\right)\)\(\rightarrow\) \(MgSO_4\)+2\(H_2O\)
3. \(HNO_3\)+\(Zn\left(OH\right)_3\)-->\(Zn\left(NO_3\right)_2\)+\(H_2O\)
2\(HNO_3\)+\(Zn\left(OH\right)_3\)-->\(Zn\left(NO_3\right)_2\)+\(H_2O\)
2\(HNO_3\)+\(Zn\left(OH\right)_3\)\(\rightarrow\)\(Zn\left(NO_3\right)_2\)+2\(H_2O\)

(34): MgSO₄ + BaCl₂ → MgCl₂ + BaSO₄↓

(35) MgCl₂ + 2NaOH → Mg(OH)₂↓ + 2NaCl

(36) Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O

(37) Mg(OH)₂ + H₂SO₄ → MgSO₄ + 2H₂O

(38) MgSO₄ + 2NaOH → Na₂SO₄ + Mg(OH)₂↓

(39) MgSO₄ + BaCl₂ → BaSO₄↓ + MgCl₂

(40) CuSO₄ + Ba(OH)₂ → BaSO₄↓ + Cu(OH)₂↓

(41) CuSO₄ + Fe(OH)₂ → FeSO₄ + Cu(OH)₂↓

(42) Fe₂(SO₄)₃ + 3Cu(OH)₂ → 3CuSO₄ + 2Fe(OH)₃↓

(43) 2FeSO₄ + 2H₂SO₄ → Fe₂(SO₄)₃ + 2H₂O + SO₂↑

(44) Fe₂(SO₄)₃ + Fe → 3FeSO₄

(45) 3FeSO₄ + 2Al(OH)₃ → Al₂(SO₄)₃ + 3Fe(OH)₂↓

(46) FeSO₄ + 2NaOH → Na₂SO₄ + Fe(OH)₂↓

(48) Al(OH)₃ + NaOH → NaAlO₂ + 2H₂O

(49) 2NaAlO₂ + 3H₂O + CO₂ → 2Al(OH)₃↓ + Na₂CO₃

(50) CO₂ + 3H₂O + 2NaAlO₂ → 2Al(OH)₃↓ + Na₂CO₃

(51) 4Fe(OH)₂ + O₂ + 2H₂O \(\underrightarrow{to}\) 4Fe(OH)₃

(52) 2Fe(OH)₃ + 3H₂SO₄ → Fe₂(SO₄)₃ + 6H₂O

34. MgSO4 + BaCl2 -> BaSO4 + MgCl2

35. MgCl2 + 2NaOH -> 2NaCl + Mg(OH)2

A: Cu(OH)2 \(\underrightarrow{t^o}\) CuO + H2O

CuO + 2HCl CuCl2 + H2O

CuCl2 +2 NaOH Cu(OH)2 + NaCl

Cu(OH)2 + H2SO4 CuSO4 + 2H2O

B: Mg(OH)2 \(\underrightarrow{t^o}\) 2MgO + H2O

MgO + 2HCl MgCl2 + H2O

MgCl2 + 2NaOH Mg(OH)2 + NaCl

Mg(OH)2 + H2SO4 MgSO4 + 2H2O

a.

2Al2O3 \(\underrightarrow{t^o}\)4Al + 3O2\(\uparrow\)

Al + 6HNO3 \(\rightarrow\) Al(NO3)3\(\downarrow\) + 3NO2 + 3H2O

Al(NO3)3 + NaOH \(\rightarrow\) Al(OH)3\(\downarrow\) + NaNO3

2Al(OH)3 \(\xrightarrow[criolit]{đpnc}\) Al2O3 + 3H2O

Al2O3 + 3H2SO4 \(\rightarrow\) Al2(SO4)3 + 3H2O

Al2(SO4)3 + 3BaCl2 \(\rightarrow\) 3BaSO4\(\downarrow\) + 2AlCl3

2AlCl3 \(\xrightarrow[criolit]{đpnc}\) 2Al + 3Cl2\(\uparrow\)

2Al + 3CuSO4 \(\rightarrow\) 3Cu + Al2(SO4)3

Mg + H₂SO₄ -------> MgSO₄ + H₂

MgSO₄ + BaCl₂ --------> MgCl₂ + BaSO₄

MgCl₂ + 2KNO₃ -------> 2KCl + Mg(NO₃)₂

Mg(NO₃)₂ + 2NaOH ------> Mg(OH)₂ + 2NaNO₃

Mg(OH)₂ --------> MgO + H₂O

MgO + H₂SO₄ -------> MgSO₄ + H₂O

a,

\(1.\text{2Mg + O2 → 2MgO}\)

\(2.\text{2HCl + MgO → H2O + MgCl2}\)

\(3.\text{2NaOH + MgCl2 → Mg(OH)2 + 2NaCl }\)

\(4.\text{H2SO4 + Mg(OH)2 → 2H2O + MgSO4}\)

b,

\(1.\text{4Al(bột)+3O2=2Al2O3}\)

\(2.\text{Al2O3 + 6HCl → 2AlCl3 + 3H2O}\)

\(3.\text{AlCl3 + 3NaOH → Al(OH)3 + 3NaCl}\)

\(4.\text{2Al(OH)3=Al2O3+3H2O}\)

a) 2Mg+O2--->2MgO

MgO+2HCl---->MgCl2+H2

MgCl2+2NaOH---->2NaCl+Mg(OH)2

Mg(OH)2+ CuSO4---->Cu(OH)2+MgSO4

b)4 Al+3O2--->2Al2O3

Al2O3+6HCl----->2AlCl3+3H2O

AlCl3+3NaOH---->Al(OH)3+3NaCl

2Al(OH)3---->Al2O3+3H2O