cân bằng các chất sau
1) H2O2-->H2O+O2
2)H2O2+KI-->KIO3+H2O
3)CH4-->C2H2+H2
4)CaC2+H2O-->Ca(OH)2+C2H2
5)C6H6+O2-->CO2+H2O
6)Ba(OH)2+H3 PO4-->Ba3(PO)4+H2O
7)AL2O3+NAOH-->NaAlO2+H2O
8)AL+NAOH+H2O-->Na ALO2+H2
9)H2SO4+AL(OH)3-->AL2(SO4)3+H20
10)C2H5OH+O2-->CO2+H2O
1,
1) 2H2O2-->2H2O+O2
2)3H2O2+KI-->KIO3+3H2O
3)2CH4-->C2H2+3H2
4)CaC2+2H2O-->Ca(OH)2+C2H2
5)2C6H6+15O2-->12CO2+6H2O
6)3Ba(OH)2+2H3 PO4-->Ba3(PO)4+6H2O
7)AL2O3+2NAOH-->2NaAlO2+H2O
8)2AL+2NAOH+2H2O-->2Na ALO2+3H2
9)3H2SO4+2AL(OH)3-->AL2(SO4)3+6H20
10)C2H5OH+3O2-->3CO2+2H2O
Lập phương trình hóa học:
1, Ca + O2---> CaO
2, Na + Cl2---> NaCl
3, Fe + Cl2---> FeCl3
4, Na2O + H2O---> NaOH
5, Al + S---> Al2S3
6, SO2 + O2---> SO3
7, Fe + FeCl3---> FeCl2
8, FeCl2 + NaOH---> Fe(OH)2 + NaCl
9, Mg + HCl---> MgCl2 + H2
10, Fe(OH)3 ---> FeO3 + H2O
11, P2O5 + H2O---> H3PO4
12, P + O2---> P2O5
13, NaHCO3 ---> N2CO3 + H2O + O2
14, H2 + O2---> H2O
15, K + H2O---> KOH + H2
16, FeCl2 + Cl2---> FeCl3
1. \(2Ca+O_2\underrightarrow{t^o}2CaO\)
2. \(2Na+Cl_2\underrightarrow{t^o}2NaCl\)
3. \(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
4. \(Na_2O+H_2O\rightarrow2NaOH\)
5. \(2Al+3S\underrightarrow{t^o}Al_2S_3\)
6. \(2SO_2+O_2\underrightarrow{t^o}2SO_3\)
7. \(Fe+2FeCl_3\rightarrow3FeCl_2\)
8. \(FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_{2\downarrow}+2NaCl\)
9. \(Mg+2HCl\rightarrow MgCl_2+H_2\)
10. \(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
11. \(P_2O_5+3H_2O\rightarrow2H_3PO_4\)
12. \(4P+5O_2\underrightarrow{t^o}2P_2O_5\)
13. Bạn xem lại đề câu này nhé!
14. \(H_2+\dfrac{1}{2}O_2\underrightarrow{t^o}H_2O\)
15. \(K+H_2O\rightarrow KOH+\dfrac{1}{2}H_2\)
16. \(2FeCl_2+Cl_2\underrightarrow{t^o}2FeCl_3\)
Bạn tham khảo nhé!
1, 2Ca + O2---> 2CaO
2, 2Na + Cl2---> 2NaCl
3, 2Fe + 3Cl2---> 2FeCl3
4, Na2O + H2O---> 2NaOH
5, 2Al + 3S---> Al2S3
6, 2SO2 + O2---> 2SO3
7, Fe + 2FeCl3---> 3FeCl2
8, FeCl2 + 2NaOH---> Fe(OH)2 + 2NaCl
9, Mg + 2HCl---> MgCl2 + H2
10, 2Fe(OH)3 ---> Fe2O3 + 2H2O
11, P2O5 + 3H2O---> 2H3PO4
12, 4P + 5O2---> 2P2O5
13, NaHCO3 + N2CO3---> H2O + O2 ( cái này mk nhớ là ko có, bạn kiểm tra lại xe có sai ko nhé )
14, 2H2 + O2---> 2H2O
15, 2K + 2H2O---> 2KOH + H2
16, 2FeCl2 + Cl2---> 2FeCl3
Chúc bạn học tốt!!! 
1
Lập phương trình hóa học sau:
1/ Na2O + H2O --- > NaOH
2/ Na + H2O --- > NaOH + H2
3/ Al(OH)3 --- > Al2O3 + H2O
4/ Al2O3 + HCl --- > AlCl3 + H2O
5/ FeO + HCl --- > FeCl2 + H2O
6/ P + O2 --- > P2O5
7/ N2O5 + H2O --- > HNO3
8/ Zn + HCl --- > ZnCl2 + H2
9/ Al + CuCl2 --- > AlCl3 + Cu
10 / Al + H2SO4 --- > Al2(SO4)3 + H2
Giúp mik với
1: \(Na_2O+H_2O->2NaOH\)
2: \(2Na+2H_2O->2NaOH+H_2\uparrow\)
3: \(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
4: \(Al_2O_3+6HCl->2AlCl_3+3H_2O\)
5: \(FeO+2HCl->FeCl_2+H_2O\)
6: \(4P+5O_2\underrightarrow{t^o}2P_2O_5\)
7: \(N_2O_5+H_2O->2HNO_3\)
8: \(Zn+2HCl->ZnCl_2+H_2\)
9: \(2Al+3CuCl_2->2AlCl_3+3Cu\downarrow\)
10: \(2Al+3H_2SO_4->Al_2\left(SO_4\right)_3+3H_2\uparrow\)
1. \(Na_2O+H_2O\rightarrow2NaOH\)
2. \(2Na+2H_2O\rightarrow2NaOH+H_2\)
3. \(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
4. \(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
5. \(FeO+2HCl\rightarrow FeCl_2+H_2O\)
6. \(4P+5O_2\underrightarrow{t^o}2P_2O_5\)
7. \(N_2O_5+H_2O\rightarrow2HNO_3\)
8. \(Zn+2HCl\rightarrow ZnCl_2+H_2\)
9. \(2Al+3CuCl_2\rightarrow2AlCl_3+3Cu\)
10. \(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\uparrow\)
1, Al+O2➝Al2O32,K+O2➞K2O3,Al(OH)3➞Al2O3+H2O4,Al2O3+HCl➜AlCl3+H2O5,Al+HCl➜AlCl3+H2↑6,FeO+HCl➜FeCl2+H2O7,Fe2O3+H2SO4➜Fe2(SO4)3+H2O8,NaOH+H2SO4➜Na2SO4+H2O9,Ca(OH)2+FeCl3->CaCl2+Fe(OH)310,BaCl2+H2SO4->BaSO4↓+HCl
\(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)
\(4K+O_2\rightarrow2K_2O\)
\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
\(CaCl_2+Fe\left(OH\right)_3\rightarrow\) Không phản ứng
\(BaCl_2+H_2SO_4\rightarrow2HCl+BaSO_4\downarrow\)
Lập phương trình hóa học của các phản ứng sau: a)Fe(OH)3 t^0----> Fe2O3 +H2O b)CH4 + O2 t^0----> CO2 + H2O c)Al + Cl2 t^0----> ALCL3 d)SO2 + O2 t^0---->SO3 e)KCIO3 t^0----> KCI + O2
Cân bằng các phương trình hóa học sau: 1) Na + O2 à Na2O 2) P + O2 à P2O5 3) Fe + O2 à Fe3O4 4) H2 + O2 à H2O 5) N2 + H2 à NH3 6) P2O5 + H2O à H3PO4 7) N2O5 + H2O à HNO3 8) Al + HCl à AlCl3 + H2 9) Al + H2SO4 à Al2(SO4)3 + H2 10) ?Cu + ? à 2CuO 11) CaO + ?HNO3 à Ca(NO3)2 à + ? 12) Al(OH)3+ ?HNO3 à ? + H2O 13) Zn + ?HCl à ? + H2 Giúp mình với mọi người ơi!!
\(1,4Na+O_2\rightarrow^{t^o}2Na_2O\\ 2,4P+5O_2\rightarrow^{t^o}2P_2O_5\\ 3,3Fe+2O_2\rightarrow^{t^o}Fe_3O_4\\ 4,2H_2+O_2\rightarrow^{t^o}2H_2O\\ 5,N_2+H_2⇌^{\left(t^o,xt,p\right)}NH_3\\ 6,P_2O_5+3H_2O\rightarrow2H_3PO_4\\ 7,N_2O_5+H_2O\rightarrow2HNO_3\\ 8,2Al+6HCl\rightarrow2AlCl_3+3H_2\\ 9,2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\\ 10,2Cu+O_2\rightarrow^{t^o}2CuO\\ 11,CaO+2HNO_3\rightarrow Ca\left(NO_3\right)_2+H_2O\\ 12,Al\left(OH\right)_3+3HNO_3\rightarrow Al\left(NO_3\right)_3+3H_2O\\ 13,Zn+2HCl\rightarrow ZnCl_2+H_2\)
Hãy lập các phương trình hóa học theo các sơ đồ phản ứng sau? a) P + O2 P2O5 b) Mg + Cl2 MgCl2 c) Na + H2O NaOH + H2 d) C + O2 CO2 e) CxHy + O2 CO2 + ?H2O f) Al + Fe2O3 Al2O3 + Fe g) Al + H2SO4 ----→ Al2(SO4)3 + H2 i) FexOy + CO ---→ CO2 + Fe k) Fe2O3 + HCl ----→ FeCl3 + H2O l) Fe + O2 ----→ Fe3O4
a) $4P + 5O_2 \xrightarrow{t^o} 2P_2O_5$
b) $Mg + Cl_2 \xrightarrow{t^o} MgCl_2$
c) $2Na + 2H_2O \to 2NaOH + H_2$
d) $C + O_2 \xrightarrow{t^o} CO_2$
e) $C_xH_y + (x + \dfrac{y}{4})O_2 \xrightarrow{t^o} xCO_2 + \dfrac{y}{2}H_2O$
f) $2Al + Fe_2O_3 \xrightarrow{t^o} Al_2O_3 + 2Fe$
g) $2Al + 3H_2SO_4 \to Al_2(SO_4)_3 + 3H_2$
i) $Fe_xO_y + yCO \xrightarrow{t^o} xFe + yCO_2$
k) $Fe_2O_3 + 6HCl \to 2FeCl_3 +3 H_2O$
l) $3Fe + 2O_2 \xrightarrow{t^o} Fe_3O_4$
Lập PTHH:
VD: Cân bằng các phản ứng hóa học sau:
a. Fe + O2 -----> Fe3O4. b. NaOH + AlCl3--->Al(OH)3 + NaCl
c. K + H2O ---> KOH + H2 d. KMnO4 ---> K2MnO4 + MnO2 + O2
e. CnH2n + O2---> CO2 + H2O g. FeClx + Ba(OH)2 ---> BaCl2 + Fe(OH)x
\(a.3Fe+2O_2\overset{t^o}{--->}Fe_3O_4\)
\(b.3NaOH+AlCl_3--->3NaCl+Al\left(OH\right)_3\downarrow\)
\(c.2K+2H_2O--->2KOH+H_2\uparrow\)
\(d.2KMnO_4\overset{t^o}{--->}K_2MnO_4+MnO_2+O_2\uparrow\)
\(e.2C_nH_{2n}+3nO_2\overset{t^o}{--->}2nCO_2\uparrow+2nH_2O\)
\(g.2FeCl_x+xBa\left(OH\right)_2--->xBaCl_2+2Fe\left(OH\right)_x\downarrow\)
lập các phương trình hóa học theo sơ đồ phản ứng sau:
1)Fe+Cl2 --- > FeCl2
2)Zn+S---> ZnS
3)P+O2 ----> P2O5
4) Mg+HCl ---> MgCl2 + H2
5)CO2+H2O --->H2CO3
6)K2O+H2O ----> KOH
7)Na + O2 ----> Na2O
8)Fe2(SO4)3 + Ca(OH)2 ----> Fe(OH)3+ CaSO4
9. Al2O3 + H2SO4 -----> Al2(SO4)3 + H2O
\(1.2Fe+3Cl_2\overset{t^o}{--->}2FeCl_3\)
\(2.Zn+S\overset{t^o}{--->}ZnS\)
\(3.4P+5O_2\overset{t^o}{--->}2P_2O_5\)
\(4.Mg+2HCl--->MgCl_2+H_2\)
\(5.CO_2+H_2O--->H_2CO_3\)
\(6.K_2O+H_2O--->2KOH\)
\(7.4Na+O_2--->2Na_2O\)
\(8.Fe_2\left(SO_4\right)_3+3Ca\left(OH\right)_2--->2Fe\left(OH\right)_3\downarrow+3CaSO_4\)
\(9.Al_2O_3+3H_2SO_4--->Al_2\left(SO_4\right)_3+3H_2O\)
1) 2Fe+3Cl2 --to- > 2FeCl3
2)Zn+S --to- > ZnS
3) 4P+5O2 --to- > 2P2O5
4) Mg+ 3HCl ---> MgCl2 + H2
5)CO2+H2O --->H2CO3
6)K2O+H2O ----> 2KOH
7)4Na + O2 --to- > 2Na2O
8)Fe2(SO4)3 + 3Ca(OH)2 ----> 2Fe(OH)3+ 3CaSO4
9. Al2O3 + 3H2SO4 -----> Al2(SO4)3 + 3H2O
