giúp mình , mình cần gấp

\(a,4Na+O_2\xrightarrow{t^o}2Na_2O\\ b,3Fe+2O_2\xrightarrow{t^o}Fe_3O_4\\ c,2Al+6HCl\to 2AlCl_3+3H_2\\ d,2NaOH+H_2SO_4\to Na_2SO_4+2H_2O\\ e,2Ba+O_2\xrightarrow{t^o}2BaO\\ f,2KClO_3\xrightarrow[MnO_2]{t^o}2KCl+3O_2\\ g,3Fe+2O_2\xrightarrow{t^o}Fe_3O_4\\ h,2Al+3CuSO_4\to Al_2(SO_4)_3+3Cu\)

a/ Na₂O + H₂O → 2NaOH (Phản ứng hóa hợp)

b/ 2KOH + H₂SO₄ → K₂SO₄ + 2H₂O (Phản ứng oxi-hóa khử)

c/ 2SO₂ + O₂ → 2SO₃ (Phản ứng oxi-hóa)

d/ 2Al2O3 → 4Al + 3O₂ (Phản ứng phân hủy)

\(MgCl_2+Ba\left(OH\right)_2\rightarrow BaCl_2+Mg\left(OH\right)_2\downarrow\)

\(Al\left(OH\right)_3+3HCl\rightarrow AlCl_3+3H_2O\)

\(2AgNO_3+CuCl_2\rightarrow Cu\left(NO_3\right)_2+2AgCl\downarrow\)

\(K_2O+H_2O\rightarrow2KOH\)

\(Na+H_2O\rightarrow NaOH+\dfrac{1}{2}H_2\)

MgCl 2 +Ba(OH) 2--> \(BaCl_2+Mg\left(OH\right)_2\)

 Al(OH) 3 +HC ----> \(AlCl_3+3H_2O\)

 AgNO 3 +CuCl 2-----> \(2AgCl+Cu\left(NO_3\right)_2\)

 K 2 O+H 2 O ---->  2KOH

a. 2Na+2H 2 O--->2NaOH + H2

\(4Al+3O2\rightarrow2Al2O3\)

\(\text{BaCl2 + Na2SO4 → 2NaCl + BaSO4}\)

\(\text{HCl + NaOH → H2O + NaCl}\)

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

Na2SO4+BaCl2----->BaSO4+2NaCl

NaOH+ HCl---->NaCl+H2O

 4Na+O2->2Na₂O

(2): Na2O +H2O -> 2NaOH

(3): 2NaOH + BaCl2-> 2NaCl + Ba(OH)2

(4): NaCl + AgNO3-> AgCl + NaNO3

phần 2:

(1) 2NaOH + CO2-> Na2CO3 + H2O

(2) Na2CO3 +CaCl2- > CaCO3 + 2NaCl

(3) CaCO3-t⁰-> CaO + CO2

(4) CaO +H2O -> Ca(OH)2

(5) Ca(OH)2 + BaCl₂-> Ba(OH)2 + CaCl2

2Na + 2H₂O -> 2NaOH + H₂

Tỉ lệ giữa nguyên tử Na:phân tử nước:phân tử NaOH:phân tử Hidro=2:2:2:1

2Na + 2H₂O ---> 2NaOH + H₂

Tỉ lệ : 2:2:2:1

\(a,2Al+6HCl\to 2AlCl_3+3H_2\\ b,2Fe(OH)_3+3H_2SO_4\to Fe_2(SO_4)_3+6H_2O\\ c,2Al+3Cl_2\xrightarrow{t^o}2AlCl_3\\ d,Na+H_2O\to NaOH+\dfrac{1}{2}H_2\)

@Elly Phạm giúp với

1/ 4Al+3O2->2Al2O3

2/ 4K+O2->2K2O

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

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

5/ 2Al+6HCl->2AlCl3+3H2

6/ FeO+2HCl->FeCl2+H2O

7/ Fe2O3+3H2SO4->Fe2(SO4)3+3H2O

8/ 2NaOH+H2SO4->Na2SO+2H2O

9/ 3Ca(OH)2+2FeCl3->3CaCl2+2Fe(OH)3

10/ BaCl2+H2SO4->BaSO4+2HCl

------------------------------<3-----------------------------------

P₂O₅ + 3H₂O => 2H₃PO₄

Na₂O + H₂O => 2NaOH 

CO₂ + H₂O <=> H₂CO₃

K + H₂O => KOH + 1/2H₂

CaO + H₂O => Ca(OH)₂