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a, (1) S + O2 \(\underrightarrow{t^o}\) SO2
(2) SO2 + \(\dfrac{1}{2}\)O2 \(\underrightarrow{V_2O_5}\) SO3
(3) SO3 + H2O -> H2SO4
(4) H2SO4 + 2Na -> Na2SO4 + H2
(5) Na2SO4 + BaCl2 -> BaSO4 + 2NaCl
b, (1) không tìm được chất phù hợp
(2) không tìm được chất phù hợp
(3) SO2 + \(\dfrac{1}{2}\)O2 \(\underrightarrow{V_2O_5}\) SO3
(4) SO3 + H2O -> H2SO4
(5) H2SO4 + BaCl2 -> BaSO4 + 2HCl
X1: nước
X2: NaHSO4
X3: Ba(HCO3)2
X4: BaCO3
X5: AgNO3
X6: KOH
X7: Ca(OH)2
X8: CaHPO4
X9: Fe
X10: H2SO4
X11: Ag
X12: Ba(OH)2
X14: Cu(NO3)2
X15: Cu
PT tự viết nha
1)xFe2O3+(3x-y)H2->FexOy+(3x-y)H2O
2) 2NaHSO4+Ba(HCO3)2->Na2SO4+BaSO4+2CO2+2H2O
3) 2NaHSO4+BaCO3->Na2SO4+BaSO4+CO2+H2O
4) 2AgNO3+2KOH->Ag2O+2KNO3+H2O
5) Ca(OH)2+CaHPO4->Ca(H2PO4)2
X1, X2, X3 là SO2, Cl2, H2O
X4, X5 là H2S, O2 dư
X6, X7, X8 là NaCl, KMnO4, H2SO4
PTHH cuối cùng e nên ktra lại đề nhé
Bài 1:
a) K: 2K + 2HCl---> 2KCl+ H2
2K + 2H2O ---> 2KOH + H2 (nếu K dư)
Zn: Zn+ 2HCl--> ZnCl2 + H2
Cu: ko có pứ
AgNO3: AgNO3+ HCl ---> AgCl + HNO3
CuO : CuO + 2HCl --> CuCl2 + H2O
NaOH: NaOH + HCl --> NaCl + H2O
Na2SO4: ko có pứ
Mg(OH)2: Mg(OH)2 + 2HCl--> MgCl2 + 2H2O
K2CO3: K2CO3 + 2HCl --- > 2KCl + CO2 + H2O
Al2O3: Al2O3 + 6HCl --> 2AlCl3 + 3H2O
b) Na: 2Na + 2H2O --> 2NaOH
CO2: CO2 + Ba(OH)2 ---> BaCO3 + H2O (nếu Ba(OH)2 dư)
2CO2 + Ba(OH)2 ---> Ba(HCO3)2 (nếu CO2 dư)
H2SO4: Ba(OH)2 + H2SO4 --> BaSO4 + 2H2O
HCl: Ba(OH)2 + 2HCl ---> BaCl2 + H2O
MgSO4: MgSO4 + Ba(OH)2 --> Mg(OH)2 + BaSO4
Al2O3: Al2O3 + 3H2SO4 --> Al2(SO4)3 + 3H2O
NaCl: ko pứ
CuCl2: CuCl2 + Ba(OH)2 ---> Cu(OH)2 + BaCl2
c) K: 2K + 2H2O --> 2KOH + H2
Mg: ko pứ
H2SO4: Na2CO3 + H2SO4 --> Na2SO4 + CO2 + H2O
KOH: ko pứ
Ca(OH)2: Ca(OH)2 + Na2CO3 --> 2NaOH + CaCO3
BaCl2: BaCl2 + Na2CO3 --> 2NaCl + BaCO3
KCl: ko pứ
Bài 2: A: Fe2O3 B: FeCl3
D: Fe(OH)3 E: Fe2O3
4Fe + 3O2 ---> 2Fe2O3
Fe2O3 + 6HCl---> 2FeCl3+ 3H2O
FeCl3 + 3NaOH --> Fe(OH)3 + 3NaCl
2Fe(OH)3 ----> Fe2O3 + 3H2O
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
a)(5x-2y)Fe+(18x-6y)HNO3--->(5x-2y)Fe(NO3)3+3NxOy+(9x-3y)H2O
b)(5x-2y)Mg+(12x-4)HNO3--->(5x-2y)Mg(NO3)2+2NxOy+(6x-2y)H2O
c)2FexOy+(6x-2y)H2SO4--->xFe2(SO4)3+(3x-2y)SO2+(6x-2y)H2O
d)FexOy+(6x-2y)HNO3--->xFe(NO3)3+(3x-2y)NO2+(3x-y)H2O
e)2Crl3+27Cl2+64KOH--->2K2CrO4+6KlO4+54KCl+32H2O
f)3Cu2S+16HNO3--->10NO+3Cu(NO3)2+3CuSO4+8H2O
Kiểm tra lại nhé!!!
CaCO3+HCl-->CaCl2+CO2+H2O
CaCl2+Na2CO3-->CaCO3+NaCl
CaCO3-->CaO+CO2
CaO+H2O-->Ca(OH)2
Ca(OH)2+HNO3-->Ca(NO3)2+H2O
E)
Cu+O2-->CuO
CuO+H2-->Cu+H2O
CuO+..->Cu(Oh)2
Cu(Oh)2+HCl-->CuCl2+H2o
G)Na2SO3+CaCL2-->CaSO3+NaCl
S+O2-->SO2
SO2+H2O-->H2SO3
H2SO3+Ca--->CaSO3+H2
CaSO3+HCl-->CaCL2+SO2+H2O
S8+O2-->SO3
SO3+H2O-->H2SO4
H2SO4+Fe2O3-->Fe2(SO4)3+H2
2NaOH+H2SO4--->Na2SO4+2H2O
CuO+2HCl--->CuCl2+H2O
3H2SO4+Al2O3--->Al2(SO4)3+3H2O
Ca(OH)2+2HNO3--->Ca(NO3)2+2H2O
CO2+Ca(OH)2--->CaCO3+H2O
a) NaOH + CuSO4 -> Na2SO4 + Cu(OH)2
b) CuO + 2HCl -> CuCl2 + 2H2O
c) 2Al + 6H2SO4 -> Al2(SO4)3 + 6H2O + 3SO2
d) CaCO3 + HNO3 -> Ca(NO3)2 + CO2 + H2O
f) CO2 + Ca(OH)2 -> CaCO3 + H2O
bài 1
a,
(1) 2Al + 6HCl-----> 2AlCl3 + 3H2
(2)AlCl3 + 3NaOH ----> Al(OH)3 + 3NaCl
(3)2Al(OH)3 + 3H2SO4 -----> Al2(SO4)3 + 6H2O
(4)Al2(SO4)3 + 3BaCl2 -------> 2AlCl3 + 3BaSO4
(5) 4AlCl3 + 3O2 --------> 2Al2O3 + 6Cl2
(6)2Al2O3 -------đpnóng chảy, criotit------->4 Al + 3O2
b,
(1) 2Fe + 3Cl2 --------------> 2FeCl3
(2)FeCl3 + 3NaOH -------------> Fe(OH)3 + 3NaCl
(3)2Fe(OH)3 + 3H2SO4 --------------> Fe2(SO4)3 + 6H2O
(4)Fe2(SO4)3 + 3Pb(NO3)2--------------> 2Fe(NO3)3 + 3PbSO4
(5)4Fe(NO3)3 -------------> 2Fe2O3 + 12NO2 + 3O2
(6) Fe2O3 + 3H2 ------> 2Fe + 3H2O
Bạn tự hoàn thành PTHH nhé!
\(1.\\ X_1:MnO_2\\ X_2:HBr\\ X_3:SO_2\\ X_4:Cl_2\\ X_5:H_2O\\ A_1:H_2S\\ A_2:O_2\\ B_1:Ca\left(OH\right)_2\\ B_2:NH_4NO_3\\ D_1:KMnO_4\\ D_2:H_2SO_4\\ D_3:Na_2SO_3\\ 2.\\ A:HCl\\ B:H_2\\ C:Cl_2\\ D:FeCl_3\\ E:Fe\left(OH\right)_3\\ G:NaCl\\ X:NaOH\)
cảm ơn