giúp mình phân tích phân tử và nguyên tử
1, 4Al + 3O2 2Al2O3
2,Al + Cl2 AlCl3
3,2Al(OH)3+3H2SO4 Al2(SO4)3 + 6H2O
4, 2C2H2 + 5O2 4CO2 + 2H2O
5, Na2SO4 + BaCl2 2NaCl + BaSO4
6, 4Al + 3O2 2Al2O3
7, K + Cl2 KCl
8,Al(OH)3 + HNO3 Al(NO3)3 + H2O
9, 4FeS2 + 11O2 2Fe2O3 + 8SO2
10, K2SO4 + BaCl2 2KCl + BaSO4
11, 4FeS + 7O2 2Fe2O3 + 4SO2
12, K + H2O KOH + H2
13, Na + H2O NaOH + H2
14, Al(OH)3 + H2SO4 Al2(SO4)3 + H2O
15, 2Fe(OH)3 + 3H2SO4 Fe2(SO4) + 6H2O
16, Fe(OH)3 + HCl FeCl3 + H2O
giúp mình phân tích phân tử và nguyên tử
1, 4Al + 3O2 2Al2O3
2,Al + Cl2 AlCl3
3,2Al(OH)3+3H2SO4 Al2(SO4)3 + 6H2O
4, 2C2H2 + 5O2 4CO2 + 2H2O
5, Na2SO4 + BaCl2 2NaCl + BaSO4
6, 4Al + 3O2 2Al2O3
7, K + Cl2 KCl
8,Al(OH)3 + HNO3 Al(NO3)3 + H2O
9, 4FeS2 + 11O2 2Fe2O3 + 8SO2
10, K2SO4 + BaCl2 2KCl + BaSO4
11, 4FeS + 7O2 2Fe2O3 + 4SO2
12, K + H2O KOH + H2
13, Na + H2O NaOH + H2
14, Al(OH)3 + H2SO4 Al2(SO4)3 + H2O
15, 2Fe(OH)3 + 3H2SO4 Fe2(SO4) + 6H2O
16, Fe(OH)3 + HCl FeCl3 + H2O
lập PTHH theo các sơ đồ sau:
NH4NO3+NaOH-->NaNO3+NH3+H2O
(NH4)2CO3+NaOH-->Na2CO3+NH3+H2O
(NH4)2SO4+KOH-->K2SO4+NH3+H2O
(NH4)2SO4+Ba(OH)2-->BaSO4+NH3+H2O
NH4NO3+Ba(OH)2-->BaNO3+NH3+H2O
Fe2(SO4)3+Ba(NO3)2-->BASO4+FE(NO3)3
Al2(SO4)3+Ba(OH)2-->Al(OH)3+BaSO4
Fe(NO3)2+NAOH-->Fe(OH)2+NaNO3
Al2O3+HNO3-->Al(NO3)3+H2O
Fe2O3+HNO3-->FE(NO3)3+H2O
Fe3O4+HCl-->FeCl2+FeCl3+H2O
CO2+Ba(OH)2-->Ba(HCO3)2
CO2+Ca(OH)2-->Ca(HCO3)2
CO2+NaOH-->NaHCO3
NaHCO3+H2SO4-->Na2SO4+CO2+H2O
Ba(HCO3)2+HCl-->NaCl+CO2+H2O
Ba(HCO3)2+H2SO4-->BaSO4+CO2+H2O
BaCO3+HCl-->baCl2+CO2+H2O
1, Al+O2➝Al2O32,K+O2➞K2O3,Al(OH)3➞Al2O3+H2O4,Al2O3+HCl➜AlCl3+H2O5,Al+HCl➜AlCl3+H2↑6,FeO+HCl➜FeCl2+H2O7,Fe2O3+H2SO4➜Fe2(SO4)3+H2O8,NaOH+H2SO4➜Na2SO4+H2O9,Ca(OH)2+FeCl3->CaCl2+Fe(OH)310,BaCl2+H2SO4->BaSO4↓+HCl
Bài 1: (2,5 điểm):Hoàn thành các phương trình phản ứng sau:
1. Fe2O3 + CO =
2. AgNO3 + Al = Al(NO3)3 + …
3. HCl + CaCO3 = CaCl2 + H2O + …
4. C4H10 + O2 =CO2 + H2O
5. NaOH + Fe2(SO4)3 = Fe(OH)3 + Na2SO4.
6. FeS2 + O2 = Fe2O3 + SO2
7. KOH + Al2(SO4)3 = K2SO4 + Al(OH)3
8. CH4 + O2 + H2O =CO2 + H2
9. Al + Fe3O4 = Al2O3 + Fe
10.FexOy + CO = FeO + CO2
lập pthh theo các sơ đồ sau:
Mg+H2SO4-->MgSO4+SO2+H2O
CA+H2SO4-->CaSO4+SO2+H2O
Al+HNO3-->Al(NO3)3+NO2+H2O
Al+HNO3-->Al(NO3)3+NO+H2O
Al+HNO3-->Al(NO3)3+N2O+H2O
Al+HNO3-->Al(NO3)3+N2+H2O
Al+HNO3-->Al(NO3)+NH4NO3+H2O
Al+H2SO4-->Al2(SO4)3+H2S+H2O
Al+H2SO4-->Al2(SO4)3
Fe+H2SO4-->Fe2(SO4)3+S+H2O
Fe+HNO3-->Fe(NO3)3+NO2+H2O
Fe+HNO3-->Fe(NO3)3+NO+H2O
Ca+HNO3-->Ca(NO3)2+NO+H2O
KClO3+HCl-->KCl+CL2+H2O
KMnO4+HCl-->MnCl2+KCl+Cl2+H2O
MnO2+HCl-->MnCl2+Cl2+H2O
Fe3O4+HCl-->FeCl2+FeCl3+H2O
Fe3O4+H2SO4-->FeSO4+Fe2(SO4)3+H2O
Fe3O4+CO-->Fe+CO2
Fe2O3+CO-->Fe+CO2
1. a) Na + O2 -Na2O
b) Al +HCl -AlCl3 +H2
c)Fe(OH)3 - Fe2O3 +H2O
d) AgNO3 +BaCl2 - Ba(NO3) 2 +AgCl
2. a) Mg +HCl -MgCl2 +H2
b) Ca +O2 -CaO
c) C2H4 +O2 -CO2 +H2O
d) Al(OH)3 + H2SO44 -Al2(SO4)3 + H2O
a)Al2(SO4)3+?BaCl2->?AlCl3+?
b)?Al(OH)3->Al2O3+?
c)?Al+?->2Al2O3
d)BaCl2+?AgNO3->Ba(NO3)2+?
e)Ca(OH)2+?HCl->?+2H2O
f)3Fe3O4+?Al->?Fe+?
g)Ca(OH)2+CO2->?+H2O
Giúp mình bài này với. Nhanh nhé.Cảm ơn nhiều!
12 ?+O2----NaOH+H2
13 Fe+?-----FeCl2+H2
14Na+H2O-----NaOH+H2
15?+HCL------ZnCl2+H2
16 CXHy+O2------Co2+H2O
17 P2O5+H2O-------H3PO4
18 Fe2(SO4)3+KOH--------Fe(OH)3+K2SO4
19 Fe+Cl2-------Fecl3
20 CnH2n-2+O2-------CO2+H2O
21 N2O5+H2O------HNO3
22 FeCL3+NaOH-------Fe(OH)3+NaCL
hoàn thành các pư và cân bằng
bao+h2o= so2+ba(oh)2= h2so4+bacl2=
al2o3+hcl= fe+hcl= naoh+al2(so4)3=
bao+co2= fe(oh)3+hcl= mg(oh)2=
fe3o4+hcl= al(oh)3+h2so4= al(oh)3=
co2+naoh= na2co3+hcl= na2so4+bacl2=
caco3= aloh+nahso3= naoh+al+h2o=
nacl+agno3= naoh+ca(hso4)2= naoh+al2o3=
fe+agno3= naoh+(nh4)2so4= naoh+al(oh)3=
naoh+zn(oh)2=
na2so3+hcl=