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a)
4Al + 3O2\(\rightarrow\) 2Al2O3
Al2O3 +6HNO3\(\rightarrow\) 2Al(NO3)3 + 3H2O
Al(NO3)3 + 3NaOH \(\rightarrow\)Al(OH)3 + 3NaNO3
2Al(OH)3 \(\underrightarrow{^{to}}\) Al2O3 + 3H2O
Al2O3 +6HCl \(\rightarrow\) 2AlCl3 + 3H2O
AlCl3 không điện phân nóng chảy được \(\rightarrow\) Al2O3 \(\underrightarrow{^{\text{đpnc}}}\)2Al + \(\frac{3}{2}\)O2
b) 2Fe + 3Cl2 \(\rightarrow\) 2FeCl3
FeCl3 + 3NaOH \(\rightarrow\)Fe(OH)3 + 3NaCl
2Fe(OH)3\(\rightarrow\)Fe2O3 + 3H2O
Fe2O3 + 3CO \(\rightarrow\)2Fe + 3CO2
Fe + 2HCl\(\rightarrow\) FeCl2 + 2
FeCl2 + 2AgNO3\(\rightarrow\)Fe(NO3)2 + 2AgCl (thường ra Fe+3 )
c) 2Mg + O2\(\rightarrow\)2MgO
MgO + 2HCl \(\rightarrow\) MgCl2 + H2O
MgCl2 + 2NaOH \(\rightarrow\) Mg(OH)2 + 2NaCl
Mg(OH)2 + H2SO4 \(\rightarrow\)MgSO4 + 2H2O
MgSO4 + BaCl2 \(\rightarrow\) MgCl2 + BaSO4
d) Cu(OH)2\(\underrightarrow{^{to}}\) CuO + H2O
CuO + H2SO4\(\rightarrow\)CuSo4 + H2O
CuSO4 + BaCl2 \(\rightarrow\) BaSO4 + CuCl2
CuCl2 + 2AgNO3 \(\rightarrow\) Cu(NO3)2 + 2AgCl
Fe + Cu(NO3)2\(\rightarrow\) Fe(NO3)2 + Cu
Cu + \(\frac{1}{2}\)O2 \(\rightarrow\) CuO
e) 4Na + O2\(\rightarrow\) 2Na2O
Na2O + H2O \(\rightarrow\) 2NaOH
2NaOH + CO2 \(\rightarrow\)Na2CO3 + H2O
Na2CO3 + H2SO4\(\rightarrow\) Na2SO4 + CO2 + H2O
Na2SO4 + BaCl2 \(\rightarrow\)BaSO4 + 2NaCl
NaCl + AgNO3\(\rightarrow\) AgCl + NaNO3
f) Fe3O4 + 4CO\(\rightarrow\) 3Fe + 4CO2
2Fe + 3Cl2 \(\rightarrow\)2FeCl3
FeCl3 + 3AgNO3 \(\rightarrow\) Fe(NO3)3 +3AgCl
Fe(NO3)3 + 3NaOH \(\rightarrow\) Fe(OH)3 + 3NaNO3
Lần sau đăng tách riêng ra nhé
Nhìn rối mắt lắm
a) Al -> Al2O3-> Al(NO3)3-> Al(OH)3 -> Al2O3 -> AlCl3 -> Al
(1) 2A1 + O2 t0→ Al2O3
(2) Al2O3 + 6HCl → 2AlCl3 + 3H2O
(3) Al(NO3)3 + 3NaOH (vừa đủ) → 3NaNO3 + Al (OH)3
(4) 2Al(OH)3 →t0 Al2O3+ ЗН2О
(5) 2Al2O3 đpnc−−→đpnc 4Al + 3O2
(6) 2Al + 3Cl2 t→t0 2AlCl3
b) Fe -> FeCl3 -> Fe(OH)3 -> Fe2O3-> Fe -> FeCl2 -> Fe(NO3)3
(1) 2Fe + 3Cl2 → 2FeCl3
(2) FeCl3 + 3NaOH → 3NaCl + Fe(OH)3
(3) 2Fe(OH)3 → Fe2O3 + 3H2O
(4) Fe2O3 + H2→ Fe + H2O
(5) 3Fe + 2HCl → 2FeCl2 +H2↑
(6) Fe(NO3)3+3NaOH ➞Fe(OH)3 +3Na(NO3)
dài wá mình trả lời những câu còn lại sau : thông cảm cho mk nha❗❕
bạn tự cân bằng nhé chứ ko lâu lắm
a) \(S+O_2-to>SO_2\)
\(SO_2+O_2-\frac{to}{xt}>SO_3\)
\(SO_3+H_2O->H_2SO_4\)
\(NaOH+H_2SO_4->Na_2SO_4+H_2O\)
\(BaCl_2+Na_2SO_4->BaSO_4+NaCl\)
a) S +O2(1)-> SO2
(2)2SO2+O2-> 2SO3
(3)SO3+H2O---> H2SO4
(4)H2SO4+2NaOH-> Na2SO4+2H2O
(5)Na2SO4+BaCl2----> BaSO4+2NaCl
b) 2Fe +3Cl2---->2FeCl3
(2)FeCl3+3NaOH-> Fe(OH)3 +3NaCl
(3)2Fe(OH)3----> Fe2O3+3H2O
(4)Fe2O3+3H2SO4--> Fe2(SO4)3+3H2O
(5)Fe2(SO4)3+6NaCl-> 2FeCL3+3Na2SO4
c) Fe +2HCl--> FeCl2+H2
(2)FeCl2+2AgNO3-> Fe(NO3)2 +2AgCl
(3)Fe(NO3)2+2NaOH----> Fe(OH)2 +2NaNO3
(4)Fe(OH)2+MgSO4---> FeSO4+Mg(OH)2
d) 4Al+3o2 ----> 2Al2O3
(2)Al2O3+3H2SO4---> Al2(SO4)3 +3H2O
(3)Al2(SO4)3+3BaCl2-> 2AlCl3 +3BaSO4
(4)AlCl3+3AgNO3----> Al(NO3)3 +3AgCl
(5)Al(NO3)3+3NaOH-> Al(OH)3 +3NaNO3
(6)2Al(OH)3-----> Al2O3+3H2O
e) 4Na +O2-> 2Na2O
(2)Na2O+H2O-> 2NaOH
(3)2NaOH+H2SO4-> Na2SO4+2H2O
(4)Na2SO4+BaCl2-> 2NaCl+BaSO4
(5)NaCl+AgNO3---> NaNO3+AgCl
a, S + O2 \(\rightarrow\) SO2
2SO2 + O2 \(\rightarrow\) 2SO3
SO3 + H2O \(\rightarrow\) H2SO4
H2SO4 + Na2O \(\rightarrow\) Na2SO4 + H2O
Na2SO4 + Ba(OH)2 \(\rightarrow\)2NaOH + BaSO4
b, SO2 + Na2O \(\rightarrow\) Na2SO3
Na2SO3 + H2SO4 \(\rightarrow\) Na2SO4 + SO2 + H2O
Na2SO4 + Ba(OH)2 \(\rightarrow\)2NaOH + BaSO4
2NaOH + H2SO3 \(\rightarrow\) Na2SO3 + H2O
c, CaO + CO2 \(\rightarrow\) CaCO3
CaCO3 \(\rightarrow\) CaO + CO2
CaO + H2O \(\rightarrow\) Ca(OH)2
Ca(OH)2 + CO2 \(\rightarrow\) CaCO3 + H2O
CaCO3 + H2SO4 \(\rightarrow\) CaSO4 + CO2 + H2O
d, 2Fe + 3Cl2 \(\rightarrow\) 2FeCl3
FeCl3 +3NaOH \(\rightarrow\) Fe(OH)3 + 3NaCl
2Fe(OH)3 \(\rightarrow\) Fe2O3 +3H2O
Fe2O3 +3H2SO4\(\rightarrow\) Fe2(SO4)3 +3H2O
Fe2(SO4)3 +3BaCl2 \(\rightarrow\)2FeCl3 +3BaSO4
e, Fe +2HCl \(\rightarrow\) FeCl2 + H2
FeCl2 +2AgNO3 \(\rightarrow\) Fe(NO3)2 +2AgCl
Fe(NO3)2 +2NaOH \(\rightarrow\) Fe(OH)2 +2NaNO3
Fe(OH)2 \(\rightarrow\) FeO + H2O
FeO + H2SO4 \(\rightarrow\) FeSO4 + H2O
f, 2Cu + O2 \(\rightarrow\) 2CuO
CuO +2HCl \(\rightarrow\) CuCl2 + H2O
CuCl2 +2NaOH \(\rightarrow\) Cu(OH)2 +2NaCl
Cu(OH)2 \(\rightarrow\) CuO + H2O
CuO + CO \(\rightarrow\) Cu + CO2
Cu + AgSO4 \(\rightarrow\) CuSO4 + Ag
g,2Al2O3 \(\rightarrow\)4Al + 3O2
2Al + 6HCl \(\rightarrow\) 2AlCl3 + 3H2
AlCl3 +3NaOH \(\rightarrow\) Al(OH)3 +3NaCl
2NaCl + 2H2O \(\rightarrow\) 2NaOH + Cl2 + H2
2NaOH +CuCl2 \(\rightarrow\) Cu(OH)2 +2NaCl
a) 2Fe+3Cl2--->2FeCl3
FeCl3+3NaOH--->3NaCl+Fe(OH)3
3Fe(OH)3-->Fe2O3+3H2O
Fe2O3+H2---->2Fe+3H2O
Fe+H2SO4---->FeSO4+H2
FeSO4+BaCl2---->FeCl2+BaSO4
b) Fe+2HCl--->FeCl2+H2
FeCl2+AgNO3--->2AgCl+Fe(NO3)2
Fe(NO3)2+2NaOH--->2NaNO3+Fe(OH)2
Fe(OH)2+Na2SO4--->2NaOH+FeSO4
FeSO4+Zn----->ZnSO4+Fe
Fe+.....Ko biết
c)4 Al+3O2--->2Al2O3
Al2O3+3H2SO4--->Al2(SO4)3+3H2O
Al2(SO4)3+3BaCl2---->2AlCl3+3BaCl2
Alcl3+3NaOH--->Al(OH)3+3NaCl
2Al(OH)3--->Al2O3+3H2O
2Al2O3--->4Al+3O2
a) 2Fe+3Cl2--->2FeCl3
FeCl3+3NaOH--->3NaCl+Fe(OH)3
3Fe(OH)3-->Fe2O3+3H2O
Fe2O3+H2---->2Fe+3H2O
Fe+H2SO4---->FeSO4+H2
FeSO4+BaCl2---->FeCl2+BaSO4
b) Fe+2HCl--->FeCl2+H2
FeCl2+AgNO3--->2AgCl+Fe(NO3)2
Fe(NO3)2+2NaOH--->2NaNO3+Fe(OH)2
Fe(OH)2+Na2SO4--->2NaOH+FeSO4
FeSO4+Zn----->ZnSO4+Fe
ko có PTHH
c)4 Al+3O2--->2Al2O3
Al2O3+3H2SO4--->Al2(SO4)3+3H2O
Al2(SO4)3+3BaCl2---->2AlCl3+3BaCl2
Alcl3+3NaOH--->Al(OH)3+3NaCl
2Al(OH)3--->Al2O3+3H2O
2Al2O3--->4Al+3O2
a) Các PTHH:
(1) 2 Fe +3 Cl2 -to-> 2 FeCl3
(2) FeCl3 + 3 NaOH -> Fe(OH)3 +3 NaCl
(3) 2 Fe(OH)3 -to-> Fe2O3 + 3 H2O
(4) Fe2O3 + 3 CO -to-> 2 Fe + 3 CO2
(5) Fe + 2 HCl -> FeCl2 + H2
(6) FeCl2 + 2 AgNO3 -> Fe(NO3)2 + 2 AgCl
b) Các PTHH:
(1) MnO2 + 4 HCl(đặc) -to-> MnCl2 + Cl2 + 2 H2O
(2) 3 Cl2 + 2 Fe -to-> 2 FeCl3
(3) FeCl3 + 3 NaOH -> Fe(OH)3 + 3 NaCl
(4) NaCl + H2O -ddpdddcmnx-> NaOH + 1/2 H2 + 1/2 Cl2
(5) Cl2 + Cu -to-> CuCl2
(6) CuCl2 + 2 AgNO3 -> Cu(NO3)2 + 2 AgCl
c) Các PTHH:
(1) 4 Al + 3 O2 -to-> 2 Al2O3
(2) Al2O3 + 6 HCl -> 2 AlCl3 + 3 H2O
(3) AlCl3 + 3 KOH -> 3 KCl + Al(OH)3
(4) 2 Al(OH)3 -to-> Al2O3 +3 H2O
(5) 2 Al2O3 -đpnc-> 4 Al + 3 O2
Na2CO3 + H2SO4 -> Na2SO4 + CO2 + H2O
Na2SO4 + Ba(OH)2 -> BaSO4 + 2NaOH
2NaOH + FeCl2 -> Fe(OH)2 + 2NaCl
FeO + H2SO4 -> FeSO4 + H2O
FeSO4 + BaCl2 -> FeCl2 + BaSO4
Na2CO3 + H2SO4 ---> Na2SO4 + CO2 + H2O.
Na2SO4 + Ba(OH)2 ---> BaSO4↓ + 2NaOH.
2NaOH + FeCl2 ---> Fe(OH)2 + 2NaCl.
Fe(OH)2-t*-> FeO + H2O (Phân hủy nhờ nhiệt độ cao nha bạn).
Fe(OH)2 + H2SO4 ---> FeSO4 + 2H2O.
FeO + H2SO4 ---> FeSO4 + H2O.
FeSO4 + 2HCl ---> FeCl2 + H2SO4.
Chúc bạn học tốt.
a)
\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\uparrow\)
\(FeSO_4+2KOH\rightarrow K_2SO_4+Fe\left(OH\right)_2\)
\(Fe\left(OH\right)_2+2HCl\rightarrow FeCl_2+2H_2O\)
\(FeCl_2+2AgNO_3\rightarrow Fe\left(NO_3\right)_2+2AgCl\)
\(Fe\left(NO_3\right)_2+2KOH\rightarrow2KNO_3+Fe\left(OH\right)_2\)
\(Fe\left(OH\right)_2\xrightarrow[chân.không]{t^o}FeO+H_2O\)
\(FeO+CO\xrightarrow[]{t^o}Fe+CO_2\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
b)
\(4Na+O_2\rightarrow2Na_2O\)
\(Na_2O+H_2O\rightarrow2NaOH\)
\(NaOH+HCl\rightarrow NaCl+H_2O\)
\(2NaCl+2H_2O\xrightarrow[có.màng.ngăn]{điện.phân}2NaOH+Cl_2+H_2O\)
\(2NaOH+SO_3\rightarrow Na_2SO_4+H_2O\)
\(Na_2SO_4+BaCl_2\rightarrow2NaCl+BaSO_4\)
\(NaCl+AgNO_3\rightarrow NaNO_3+AgCl\)