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a) \(2Fe+3Cl_2\rightarrow2FeCl_3\)
b) \(4Al+3O_2\rightarrow2Al_2O_3\)
c) \(CuO+CO\rightarrow Cu+CO_2\uparrow\)
d) \(2Na+2H_2O\rightarrow2NaOH+H_2\uparrow\)
\(1,CuO+2HCl\rightarrow CuCl2+H2O\)
\(2,K2SO4+Ba\left(OH\right)2\rightarrow B\text{aS}O4\downarrow+2KOH\)
\(3,MgCl2+2NaOH\rightarrow Mg\left(OH\right)2\downarrow+2NaCl\)
\(4,Zn+2AgNO3\rightarrow Zn\left(NO3\right)2+2Ag\)
5, \(2Fe\left(OH\right)3-^{t0}\rightarrow Fe2O3+3H2O\)
\(6,Al2O3+3H2SO4\rightarrow Al2\left(SO4\right)3+3H2O\)
\(7,Ag2O+2HCl\rightarrow2AgCl+H2O\)
\(8,2NaCl+2H2O-\left(ddpddd\left(c\text{ó}-m\text{àng}-ng\text{ă}n\right)\right)\rightarrow2NaOH+H2+Cl2\)
\(9,Na2O+H2O\rightarrow2NaOH\)
\(10,2K+2H2O\rightarrow2KOH+H2\)
a, Fe2O3 + 2Al → Al2O3 + 2Fe
b, 2Al2O3 + 6C → Al4C3 + 3CO2↑
c, ko hiểu đề
d, Cu(OH)2 → CuO + H2O
e, Na2O + CO2 → Na2CO3
Câu 1:
1. 4Fe + 3O2 \(\underrightarrow{to}\) 2Fe2O3
2. Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O
3. Fe2(SO4)3 + 6NaOH → 3Na2SO4 + 2Fe(OH)3
4. 2Fe(OH)3 \(\underrightarrow{to}\) Fe2O3 + 3H2O
5. Fe2O3 + 3H2 \(\underrightarrow{to}\) 2Fe + 3H2O
Câu 2:
1. 4Na + O2 → 2Na2O
2. Na2O + H2O → 2NaOH
3. 2NaOH + H2SO4 → Na2SO4 + 2H2O
4. Na2SO4 + BaCl2 → 2NaCl + BaSO4
a) natri hidroxit + sắt(III)clorua →sắt(III)hidroxit + natri clorua
3 NaOH + FeCl3 → Fe(OH)3 + 3 NaCl
b) canxi hidroxit + nhôm nitrat → nhôm hidroxit + canxi nitrat
3 Ca(OH)2 + 2 Al(NO3)3 → 2 Al(OH)3 + 3 Ca(NO3)2
c) axit sunfuric + bari hidroxit → bari sunfat + nước
H2SO4 + Ba(OH)2 → BaSO4 + 2 H2O
d) Axit sunfuric + Canxi cacbonat → canxi sunfat + khí cacbon dioxit+ nước
H2SO4 + CaCO3 → CaSO4 + CO2 + H2O
e) nito + oxi → đi nito penta oxit
2 N2 + 5 O2 → 2 N2O5 [Thêm điều kiện to ở phản ứng này nữa nha]
\(a,2Fe+3Cl_2\buildrel{{t^o}}\over\to 2FeCl_3\\ 2:3:2\\ b,4Al+3O_2\buildrel{{t^o}}\over\to 2Al_2O_3\\ 4:3:2\\ c,2H_2+O_2\buildrel{{t^o}}\over\to 2H_2O\\ 2:1:2\\ d,CuO+CO\buildrel{{t^o}}\over\to Cu+CO_2\\ 1:1:1:1\\ e,2Na+2H_2O\to 2NaOH+H_2\\ 2:2:2:1 \)
a. \(CTHH:Fe_2O_3\)
\(PTK=2.56+3.16=160\left(đvC\right)\)
b. \(CTHH:NaOH\)
\(PTK=23+16+1=40\left(đvC\right)\)
c. \(CTHH\) :\(BaCl_2\)
\(PTK=137+2.35,5=208\left(đvC\right)\)
d. \(CTHH:Al_2\left(SO_4\right)_3\)
\(PTK=2.27+\left(32+4.16\right).3=342\left(đvC\right)\)
e. \(CTHH:P_2O_5\)
\(PTK=2.31+5.16=142\left(đvC\right)\)
f. \(CTHH:KNO_3\)
\(PTK=39+14+3.16=101\left(đvC\right)\)
1) 2H2 + O2 \(\underrightarrow{to}\) 2H2O
2) 2Fe + 3Cl2 \(\underrightarrow{to}\) 2FeCl3
3) 4P + 5O2 \(\underrightarrow{to}\) 2P2O5
4) 2Cu + O2 \(\underrightarrow{to}\) 2CuO
5) P2O5 + 3H2O → 2H3PO4
6) Fe + 2HCl → FeCl2 + H2
7) 2Al + 6HCl → 2AlCl3 + 3H2
8) Ba + O2 \(\underrightarrow{to}\) BaO
9) 2Fe(OH)3 \(\underrightarrow{to}\) Fe2O3 + 3H2O
10) 2Fe + 3Br2 \(\underrightarrow{to}\) 2FeBr3
11) 2Na + 2H2O → 2NaOH + H2
12) Fe + 2HCl → FeCl2 + H2
13) Cu + 2AgNO3 → Cu(NO3)2 + 2Ag
a, 4Al+ 3O2--->2Al2O3
b,2Fe+ 3Cl2-to-->2FeCl3
c,N2+H2--->NH3
d,2Na+2H2O--->2NaOh+H2\(\uparrow\)
a) 4Al + 3O2 --> 2Al2O3
b) 2Fe + 3Cl2 --> 2FeCl3
c) N2 + 3H2 --> 2NH3
d) 2Na + 2H2O --> 2NaOH + H2