Viết PT ở sơ đồ sau:
a) Mg -> MgO -> MgCl2 -> Mg(OH)2 + MgSO4
b) Al -> Al2O3 -> AlCl3
↓
Al (OH)3 -> Al2O3
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a)
\(Mg\left(OH\right)_2\underrightarrow{t^o}MgO+H_2O\)
\(MgO+H_2SO_4\rightarrow MgSO_4+H_2O\)
\(MgSO_4+BaCl_2\rightarrow BaSO_4\downarrow+MgCl_2\)
\(MgCl_2+2NaOH\rightarrow Mg\left(OH\right)_2\downarrow+2NaCl\)
b)
\(2Al_2O_3\xrightarrow[criolit]{npnc}4Al+3O_2\)
\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
\(AlCl_3+3AgNO_3\rightarrow Al\left(NO_3\right)_3+3AgCl\downarrow\)
\(4Al\left(NO_3\right)_3\underrightarrow{t^o}2Al_2O_3+12NO_2+3O_2\)
\(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
b) \(Mg\underrightarrow{1}MgO\underrightarrow{2}MgSO_4\underrightarrow{3}MgCl_2\underrightarrow{4}Mg\left(OH\right)_2\)
(1) \(2Mg+O_2\underrightarrow{t^o}2MgO\)
(2) \(MgO+H_2SO_4\rightarrow MgSO_4+H_2O\)
(3) \(MgSO_4+BaCl_2\rightarrow MgCl_2+BaSO_4\)
(4) \(MgCl_2+2KOH\rightarrow Mg\left(OH\right)_2+2KCl\)
Chúc bạn học tốt
a) \(Al\underrightarrow{1}Al_2O_3\underrightarrow{2}Al_2\left(SO_4\right)_3\underrightarrow{4}AlCl_3\underrightarrow{5}Al\left(OH\right)_3\)
(1) \(2Al+3O_2\underrightarrow{t^o}2Al_2O_3\)
(2) \(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
(3) \(Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\)
(4) \(AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\)
Chúc bạn học tốt
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
a/
b/
a)c+o2->co2
co2+ca(oh)2->caco3 +h2o
caco3+ba(oh)2->CA(OH)2+baco3
co2+ca(oh)2->caco3 +h2o
caco3+bacl2->cacl2+baco3
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❗❕
A/ 2Al + 6HCl ===> 2AlCl3 + 3H2
B/ 2Al(OH)3 =(nhiêt)==> Al2O3 + 3H2O
C/ Mg(OH)2 + H2SO4 ===> MgSO4 + 2H2O
Sau khi cân bằng ta được phương trình hóa học :
A) 2Al +6HCl ---------> 2AlCl3 + 3H2
B) 2Al(OH)3 ---------> Al2O3 + 3H2O
D) Mg(OH)2 +H2SO4 ---------> MgSO4+ 2H2O
a)
(1) 2Al + 6HCl --> 2AlCl3 + 3H2
(2) AlCl3 + 3NaOH --> Al(OH)3\(\downarrow\) + 3NaCl
(3) 2Al(OH)3 + 3H2SO4 --> Al2(SO4)3 + 6H2O
(4) Al2(SO4)3+ 3Ba(NO3)2 --> 2Al(NO3)3 + 3BaSO4\(\downarrow\)
b)
(1) 2Na + 2H2O --> 2NaOH + H2
(2) 2NaOH + H2SO4 --> Na2SO4 + 2H2O
(3) Na2SO4 + BaCl2 --> BaSO4\(\downarrow\) + 2NaCl
(4) NaCl + AgNO3 --> NaNO3 + AgCl\(\downarrow\)
c)
(1) 2Mg + O2 --to--> 2MgO
(2) MgO + 2HCl --> MgCl2 + H2O
(3) MgCl2 + 2NaOH --> Mg(OH)2\(\downarrow\) + 2NaCl
(4) Mg(OH)2 + H2SO4 --> MgSO4 + 2H2O
a)\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
\(2AlCl_3+3Ba\left(OH\right)_2\rightarrow2Al\left(OH\right)_3+3BaCl_2\)
\(2Al\left(OH\right)_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
\(Al_2\left(SO_4\right)_3+3Ba\left(NO_3\right)_2\rightarrow2Al\left(NO_3\right)_3+3BaSO_4\)
b)\(2Na+2H_2O\rightarrow2NaOH+H_2\)
\(2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\)
\(Na_2SO_4+BaCl_2\rightarrow2NaCl+BaSO_4\)
\(NaCl+HNO_3\rightarrow NaNO_3+HCl\)
Câu c em tự luyện tập nhé!!!
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