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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
a, PTHH :
\(2Fe+3Cl_2\rightarrow2FeCl_3\) (nhiệt độ>250oC)
\(2FeCl_3+3Ba\left(OH\right)_2\rightarrow3BaCl_2+2Fe\left(OH\right)_3\)
\(BaCl_2+Na_2SO_4\rightarrow BaSO_4+2NaCl\)
\(2NaCl\rightarrow2Na+Cl_2\) ( điện phân nóng chảy )
\(Cl_2+H_2O\rightarrow HCl+HClO\)
a)
3Cl2+2Fe--->2FeCl3
FeCl2+Ba(OH)2---->Fe(OH)2+BaCl2
BaCl2+Na2SO4-->BaSO4+2NaCl
2NaCl-----dpdd--> 2Na+Cl2
Cl2+H2O--->HCl+HClO
b)
CaCO3+CO2+H2O-->Ca(HCO3)2
Ca(HCO3)2-->CaCO3+H2O+CO2
CaCO3-->CaO+CO2
CaO+SiO2-->CaSiO2
Chúc bạn học tốt
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, 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
2FeS2+6O2-->Fe2O3+4SO2
2SO2+O2-->2SO3(V2O5,to)
SO3+H2O-->H2SO4
b)2Na+2H2O-->2NaOH+H2
2NaOH+H2SO4-->Na2SO4+2H2O
Na2SO4+Ba(OH)2-->BaSO4+2NaOH
2NaOH+CO2-->Na2CO3+H2O
Na2CO3+2HCl-->2NaCl+H2O+CO2
NaCl+AgNO3-->NaNO3+AgCl
C)
4Al+3O2-->2AL2O3
Al2O3+3H2SO4-->Al2(SO4)3+3H2O
Al2(SO4)3+3Ba(OH)2-->3BaSO4+2Al(OH)3
Al(OH)3+NaOH-->NaAlO2+H2O
NaALO2+H2O+CO2-->Al(OH)3+NaHCO3
Al(OH)3+HCl-->AlCl3+H2O
AlCl3+AgNO3-->Al(NO3)3+AgCl
a) 2FeS2 +11/2O2-----> 4SO2 +Fe2O3
2SO2+O2------> 2SO3
SO3+H2O----- -> H2SO4.
b) 2Na +2H2O-----> 2NaOH+H2
2NaOH+H2SO4----> Na2SO4 +2H2O
Na2SO4+Ba(OH)2----> NaOH +BaSO4
2NaOH+CO2----> Na2CO3+H2O
Na2CO3+2HCl----> 2NaCl+H2O+CO2
NaCl+AgNO3--->NaNO3+AgCl
c) 4Al+3O2--- -> 2Al2O3
Al2O3+3H2SO4 -> Al2(SO4)3+3H2O
Al2(SO4)3+6NaOH-> 2Al(OH)3+3Na2SO4
Al(OH)2+NaOH ----> NaAlO2+2H2O
NaAlO2+2H2O+CO2----> Al(OH)3 +NaHCO3
Al(OH)3+3NaOH----> AlCl3+3NaOH
Alcl3+3AgNO3---> Al(NO3)3+3NaCl
C+CO2->CO
CO+O2->CO2
CO2+NAOH->NaHCO3
NaHCO3+NaOH->Na2CO3+H2O
Na2CO3+BaCl2-->BaCO3+NaCl
NaCl+H2O-->NaOH+H2+Cl2
3Cl2+2Fe-->2FeCl3
2FeCl3+Zn-->ZnCl2+Fe
\(C+CO_2\rightarrow2CO\)
\(2CO+O_2\rightarrow2CO_2\)
\(CO_2+NaOH\rightarrow NaHCO_3\)
\(NaHCO_3+NaOH\rightarrow H_2O+Na_2CO_3\)
\(Na_2CO_3+BaCl_2\rightarrow2NaCl+BaCO_3\)
\(2NaCl\rightarrow2Na+Cl_2\)
\(3Cl_2+2Fe\rightarrow2FeCl_3\)
\(2FeCl_3+3Mg\rightarrow2Fe+3MgCl_2\)
Cau 1
a)\(2NaCl+2H_2O\rightarrow^{dp}_{cmn}2NaOH+H_2+Cl_2\left(1\right)\)
\(2NaOH+MgSO_4\rightarrow Mg\left(OH\right)_2+Na_2SO_4\left(2\right)\)
\(Mg\left(OH\right)_2\rightarrow^{t^o}MgO+H_2O\left(3\right)\)
\(MgO+2HCl\rightarrow MgCl_2+H_2O\left(4\right)\)
b)\(N_2O\)? Sua lai: \(N_2O\rightarrow Na_2O\)
\(Na_2O+H_2O\rightarrow2NaOH\left(1\right)\)
\(NaOH+HCl\rightarrow NaCl+H_2O\left(2\right)\)
\(2H_2O+2NaCl\rightarrow^{dp}_{cmn}2NaOH+H_2+Cl_2\left(3\right)\)
\(NaOH+CO_2\rightarrow NaHCO_3\left(4\right)\)
Cau 2:
a)\(FeCl_2+2NaOH\rightarrow2NaCl+Fe\left(OH\right)_2\)
b)\(Ba\left(NO_3\right)_2+H_2SO_4\rightarrow BaSO_4\downarrow+HNO_3\)
c)ko pu
d)\(AgNO_3+NaCl\rightarrow AgCl\downarrow+NaNO_3\)
g)ko pu
e)\(2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\)
a.
\(H_2SO_4+CuO\rightarrow CuSO_4+H_2O\)
\(Cu\left(OH\right)_2\rightarrow CuO+H_2O\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2AgNO_3\rightarrow2AgCl+Cu\left(NO_3\right)_2\)
\(Cu\left(NO_3\right)_2+Mg\rightarrow Mg\left(NO_3\right)_2+Cu\)
b.
\(Ca+H_2O\rightarrow Ca\left(OH\right)_2+H_2\)
\(Ca\left(OH\right)_2+FeCl_2\rightarrow Fe\left(OH\right)_2+CaCl_2\)
\(CaCl_2+Na_2CO_3\rightarrow CaCO_3+2NaCl\)
\(2NaCl+2H_2O\underrightarrow{^{đpdd}}2NaOH+Cl_2+H_2\)
\(NaOH+SO_3\rightarrow NaHSO_4\)
c.
\(4Na+O_2\underrightarrow{^{to}}2Na_2O\)
\(Na_2O+2HCl\rightarrow2NaCl+H_2O\)
\(2NaCl+2H_2O\underrightarrow{^{đpdd}}2NaOH+Cl_2+H_2\)
\(2NaOH+SO_2\rightarrow Na_2SO_3+H_2O\)
\(Na_2SO_3+2HCl\rightarrow2NaCl+SO_2+H_2O\)
+ MnO2 + 4HCl ===> MnCl2 + Cl2 + 2H2O
+ 2Fe + 3Cl2 =(nhiệt)=> 2FeCl3
+ FeCl3 + 3NaOH ===> Fe(OH)3 + 3NaCl
+ 2NaCl + 2H2O =(đpdd, có màng ngăn)=> 2NaOH + Cl2 + H2
+ CuCl2 + 2AgNO3 ===> Cu(NO3)2 + 2AgCl
Mn02+4HCl----> Cl2+ 2H20+ MnCl2
2Fe+ 3Cl2----> 2FeCl3
FeCl3+3NaOH---> Fe(0H)3 + 3NaCl
2NaCl + 2H2O ---> Cl2 + H2 + 2NaOH
NaOH sao ra CuCl2 được
CuCl2+ 2AgNO3 ---> CuNO3 + 2AgCl