Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a)\(2Cu+O_2\underrightarrow{t^o}2CuO\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+H_2SO_4\rightarrow CuSO_4+2HCl\)
\(CuSO_4+2NaOH\rightarrow Cu\left(OH\right)_2+Na_2SO_4\)
\(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)
\(CuO+H_2\rightarrow Cu+H_2O\)
\(Cu+Cl_2\rightarrow CuCl_2\)
\(CuCl_2+2NaOH\rightarrow Cu\left(OH\right)_2+2NaCl\)
b)\(2Al+3Cl_2\rightarrow2AlCl_3\)
\(AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\)
\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
\(Al_2O_3+6HNO_3\rightarrow2Al\left(NO_3\right)_3+3H_2O\)
\(2Al\left(NO_3\right)_3+3Mg\rightarrow3Mg\left(NO_3\right)_2+2Al\)
a,
Cu+ \(\frac{1}{2}\)O2\(\underrightarrow{^{to}}\) CuO
CuO+ 2HCl \(\rightarrow\) CuCl2+ H2O
Phương trình 3 ko tồn tại
CuSO4+ 2NaOH \(\rightarrow\) Cu(OH)2+ Na2SO4
Cu(OH)2\(\underrightarrow{^{to}}\) CuO+ H2O
CuO+ CO \(\underrightarrow{^{to}}\)Cu+ CO2
Cu+ Cl2 \(\underrightarrow{^{to}}\)CuCl2
CuCl2+ 2NaOH\(\rightarrow\) Cu(OH)2+ 2NaCl
b,
Al+ 3/2Cl2 \(\underrightarrow{^{to}}\)AlCl3
AlCl3+ 3NH3+ 3H2O\(\rightarrow\)Al(OH)3+ 3NaCl
2Al(OH)3 \(\underrightarrow{^{to}}\) Al2O3+ 3H2O
Al2O3+ 6HNO3 \(\rightarrow\)2Al(NO3)3+ 3H2O
2Al(NO3)3+ 3Mg\(\rightarrow\) 3Mg(NO3)2+ 2Al
2Cu + O2 \(\underrightarrow{t^o}\)2CuO
CuO + 2HCl -> CuCl2 + H2O
CuCl2 + 2NaOH -> Cu(OH)2 + 2NaCl
Cu(OH)2 + H2SO4 -> CuSO4 + 2H2O
CuSO4 + BaCl2 -> CuCl2 + BaSO4
b;
4K + O2 -> 2K2O
K2O + H2SO4 -> K2SO4 + H2O
K2SO4 + BaCl2 -> BaSO4 + 2KCl
a) 2Cu+O2\(\rightarrow\)2CuO
CuO+2HCl\(\rightarrow\)CuCl2+H2O
CuCl2+2NaOH\(\rightarrow\) Cu(OH)2\(\downarrow\) +2NaOH
Cu(OH)2+H2SO4\(\rightarrow\) CuSO4+2H2O
CuSO4+BaCL2\(\rightarrow\) CuCl2+BaSO4\(\downarrow\)
b) 2K+O2\(\rightarrow\) 2K2O
K2O+H2SO4\(\rightarrow\) K2SO4+H2O
K2SO4+Ba(OH)2\(\rightarrow\) BaSO4+2KOH
Chúc bạn học tốt!
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
\(CuSO_4\underrightarrow{1}CuCl_2\underrightarrow{2}Cu\left(OH\right)_2\underrightarrow{3}CuO\underrightarrow{4}\\ \left(1\right)CuSO_4+BaCl_2\rightarrow CuCl_2+BaSO_4\\ \left(2\right)CuCl_2+2NaOH\rightarrow2NaCl+Cu\left(OH\right)_2\\ \left(3\right)Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\\ \left(4\right)CuO+H_2\underrightarrow{t^o}Cu+H_2O\)
\(\text{BaCl2 + CuSO4 → CuCl2 + BaSO4}\)
\(\text{2NaOH + CuCl2 → Cu(OH)2 + 2NaCl}\)
\(\text{Cu(OH)2 → CuO + H2O}\)
\(\text{2CuO → 2Cu + O2}\)
1.
2Cu + O2 -(to) → 2 CuO
CuO + H2SO4 → CuSO4 + H2O
CuSO4 + BaCl2 → CuCl2 + BaSO4↓
CuCl2 + 2AgNO3 → Cu(NO3)2 + 2AgCl↓
Cu(NO3)2 + NaOH → Cu(OH)2↓ + 2NaNO3
Cu(OH)2 → CuO + H2O
CuO + CO → Cu + CO2
2.
4Al + 3O2 → 2Al2O3
Al2O3 + 6HCl → 2AlCl3 + 3H2↑
AlCl3 + 3NaOH(vừa đủ) → Al(OH)3 + 3NaCl
2Al(OH)3 → Al2O3 + 3H2O
2Al2O3-(đpnc) → 4Al + 3O2↑
2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2↑
a) Cu + O2\(\rightarrow\) CuO
CuO + HCl\(\rightarrow\) CuCl2 + H2O
CuCl2 + NaOH\(\rightarrow\)Cu(OH)2 + NaCl
Cu(OH)2 + H2SO4\(\rightarrow\)CuSO4 + H2O
CuSO4 + Fe\(\rightarrow\) FeSO4 + Cu
b) Fe + Cl2 \(\rightarrow\) FeCl3
FeCl3 + NaOH\(\rightarrow\) Fe(OH)3 + NaCl
Fe(OH)3 \(\underrightarrow{nhietphan}\) Fe2O3 + H2O
Fe2O3 + H2SO4 \(\rightarrow\) Fe2(SO4)3 + H2O
Fe2(SO4)3 + BaCl2 \(\rightarrow\)FeCl3 + BaSO4
c) Fe + Cl2 \(\rightarrow\) FeCl3
FeCl3 + NaOH\(\rightarrow\) Fe(OH)3 + NaCl
Fe(OH)3\(\underrightarrow{nhietphan}\) Fe2O3 + H2O
Fe2O3 + CO\(\underrightarrow{^{to}}\) Fe + CO2
Fe + HCl \(\rightarrow\) FeCl2 + H2
d) Al + O2 \(\rightarrow\) Al2O3
Al2O3 + HCl\(\rightarrow\)AlCl3 + H2O
AlCl3 + NaOH \(\rightarrow\)Al(OH)3 + NaCl
Al(OH)3 \(\underrightarrow{nhietphan}\) Al2O3 + H2O
Al2O3 \(\underrightarrow{nhietphan}\) Al + O2
1) S-->SO2--->SO3----->H2SO4--->Na2SO4
S+O2----->SO2
2SO2+O2--->2SO3
SO3+H2O---->H2SO4
H2SO4+2NaOH--->Na2SO4+2H2O
2) a)Fe--->FeCl3------>Fe(OH)3----->Fe2O3----->Fe2(SO3)3
2Fe+3Cl2---->2FeCl3
FeCl3+3NaOH----->3NaCl+Fe(OH)3
2Fe(OH)3----->Fe2O3+3H2O
Fe2O3+3H2SO4----->Fe2(SO4)3+3H2O
b) Câu này k viết dc nha
Ý b của bạn thiếu Cu nhé :
Sắp xếp :
\(CuO\rightarrow Cu\rightarrow CuCl_2\rightarrow Cu\left(OH\right)_2\rightarrow CuSO_4\rightarrow Cu\left(NO_3\right)_2\)
Viết phương trình :
\(CuO+CO\rightarrow Cu+CO_2\)
\(Cu+Cl_2\rightarrow CuCl_2\)
\(3CuCl_2+2Al\left(OH\right)_2\rightarrow3Cu\left(OH\right)_2\downarrow+2AlCl_3\)
\(3Cu\left(OH\right)_2+2Fe\left(SO_4\right)_3\rightarrow3CuSO_4+2Fe\left(OH\right)_3\downarrow\)
\(CuSO_4+Ba\left(NO_3\right)_2\rightarrow Cu\left(NO_3\right)_2+BaSO_4\downarrow\)
a) S + O2 \(\underrightarrow{to}\) SO2
2SO2 + O2 \(\underrightarrow{to}\) 2SO3
SO3 + H2O → H2SO4
H2SO4 + 2NaOH → Na2SO4 + 2H2O
Na2SO4 + BaCl2 → BaSO4↓ + 2NaCl
a.Fe + 2HCl-----> FeCl2 + H2
FeCl2 + 2NaOH----->Fe(OH)2 + 2NaCl
Fe(OH)2+ H2SO4---->FeSO4 + 2H2O
FeSO4 + Ba(NO3)2----->Fe(NO3)2 + BaSO4
b.4Al + 3O2---t*-->2Al2O3
Al2O3 + 6HCl------>2AlCl3 + 3H2O
AlCl3 + 3NaOH----->Al(OH)3 + 3NaCl
2Al(OH)3----t*---> Al2O3 + 3H2O
c.2Cu+ O2--t*->2CuO
CuO + 2HCl---->CuCl2 + H2O
CuCl2 + 2NaOH----->Cu(OH)2 + 2NaCl
Cu(OH)2---t*---> CuO + H2O
d.2Cu+ O2--t*->2CuO
CuO + 2HCl---->CuCl2 + H2O
CuCl2 + 2AgNO3-----> Cu(NO3)2 + 2AgCl
Cu(NO3)2 + 2NaOH-----> Cu(OH)2 + 2NaNO3
Cu(OH)2---t*--->CuO + H2O
CuO + H2---t*--> Cu + H2O
Chất đầu tiên chắc là Cu(OH)2
\(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)
\(CuO+H_2SO_4\rightarrow CuSO_4+H_2O\)
\(CuSO_4+BaCl_2\rightarrow CuCl_2+BaSO_4\downarrow\)
\(Mg+CuCl_2\rightarrow MgCl_2+Cu\)
cám ơn ạ .