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Câu 1:
\(1,CO_2+Ca(OH)_2\to CaCO_3\downarrow+H_2O\\ 2,Na+H_2O\to NaOH+\dfrac{1}{2}H_2\\ 4,Al_2O_3+6HCl\to 2AlCl_3+3H_2O\\ 5,4P+5O_2\xrightarrow{t^o}2P_2O_5\\ 6,FeO+2HCl\to FeCl_2+H_2O\\ 7,Fe_2O_3+3H_2SO_4\to Fe_2(SO_4)_3+3H_2O\\ 8,2NaOH+H_2SO_4\to Na_2SO_4+2H_2O\\ 9,3Ca(OH)_2+2FeCl_3\to 2Fe(OH)_3\downarrow+3CaCl_2\\ 10,Fe(OH)_3+3HCl\to FeCl_3+3H_2O\\ 11,N_2O_5+H_2O\to 2HNO_3\\ 12,Al_2O_3+3H_2SO_4\to Al_2(SO_4)_3+3H_2O\)
Câu 2:
\(1,CaO+CO_2\to CaCO_3\\ 1:1:1\\ 2,Al_2O_3+6HCl\to 2AlCl_3+3H_2O\\ 1:6:2:3\\ 3,3KOH+AlCl_3\to 3KCl+Al(OH)_3\downarrow\\ 3:1:3:1\\ 4,Mg+2HCl\to MgCl_2+H_2\\ 1:2:1:1\)
1/ 2Al + 3O2 → 2Al2O3
2/ 4K + O2 → 2K2O
3/ 2Al(OH)3 t0 → Al2O3 + 3H2O
4/ Al2O3 + 6HCl → 2AlCl3 + 3H20
5/ 2Al + 6HCl → 2AlCl3 + 3H2↑
6/ Fe0 + 2HCl → FeCl2 + H20
7/ Fe203 + 3H2S04 → Fe2(S04)3 + 3H20
8/ 2Na0H + H2S04 → Na2S04 + 2H20
9/ 3Ca(0H)2 + 2FeCl3 → 3CaCl2 + 2Fe(0H)3 ↓
10/ BaCl2 + H2S04 → BaS04↓ + 2HCl
11/ 2Fe(0H)3 t0→ Fe203 + 3H20
12/ Fe(0H)3 + 3HCl → FeCl3 + 3H20
13/ CaCl2 + 2AgN03 → Ca(N03)2 +2 AgCl ↓
14/4P +502 t0→2P205
15/ N2O5 + H2O →2HNO3
16/ Zn +2HCl → ZnCl2 + H2↑
17/2Al +3CuCl2 →2AlCl3 +3Cu
18/ C02 + Ca(0H)2 → CaC03↓ + H20
19/ S02 + Ba(0H)2 → BaS03↓ + H20
20/2KMn04 t0 → K2Mn04 + Mn02 + 02↑
1/ 4Al + 3O2 → 2Al2O3
2/ 4K + O2 → 2K2O
3/ 2Al(OH)3 t0 → Al2O3 + 3H2O
4/ Al2O3 + 6HCl → 2AlCl3 + 3H20
5/ 2Al + 6HCl → 2AlCl3 + 3H2↑
6/ Fe0 + 2HCl → FeCl2 + H20
7/ Fe203 + 3H2S04 → Fe2(S04)3 + 3H20
8/ 2Na0H + H2S04 → Na2S04 + 2H20
9/ 3Ca(0H)2 + 2FeCl3 → 3CaCl2 + 2Fe(0H)3 ↓
10/ BaCl2 + H2S04 → BaS04↓ + 2HCl
11/ 2Fe(0H)3 t0→ Fe203 + 3H20
12/ Fe(0H)3 + 3HCl → FeCl3 + 3H20
13/ CaCl2 + 2AgN03 → Ca(N03)2 + 2AgCl ↓
14/ 4P + 502 t0→ 2P205
15/ N205 + H20 → 2HN03
16/ Zn + 2HCl → ZnCl2 + H2↑
17/ 2Al + 3CuCl2 → 2AlCl3 + 3Cu
18/ C02 + Ca(0H)2 → CaC03↓ + H20
19/ S02 + Ba(0H)2 → BaS03↓ + H20
20/ 2KMn04 t0 → K2Mn04 + Mn02 + 02↑
\(1.4Na+O_2\rightarrow2Na_2O\)
\(2.4P+5O_2\rightarrow2P_2O_5\)
\(3.Zn+Cl_2\rightarrow ZnCl_2\)
\(4.2Al+3S\rightarrow Al_2S_3\)
\(5.2KClO_3\rightarrow2KCl+3O_2\)
\(6.2KNO_3\rightarrow2KNO_2+O_2\)
\(7.2Al\left(OH\right)_3\rightarrow Al_2O_3+3H_2O\)
\(8.3H_2+Fe_2O_3\rightarrow2Fe+3H_2O\)
\(9.3CO+Fe_2O_3\rightarrow2Fe+3CO_2\)
\(10.H_2+CuO\rightarrow Cu+H_2O\)
\(11.2Al+6HCl\rightarrow2AlCl_3+3H_2\)
\(12.Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(13.2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)
\(14.FeO+2HCl\rightarrow FeCl_2+H_2O\)
\(15.Na_2O+H_2O\rightarrow2NaOH\)
\(16.N_2O_5+H_2O\rightarrow2HNO_3\)
\(17.3Ca\left(OH\right)_2+2FeCl_3\rightarrow3CaCl_2+2Fe\left(OH\right)_3\)
\(18.CuCl_2+2AgNO_3\rightarrow Cu\left(NO_3\right)_2+2AgCl\)
\(19.2NaOH+FeSO_4\rightarrow Na_2SO_4+Fe\left(OH\right)_2\)
\(20.BaCl_2+H_2SO_4\rightarrow BaSO_4+2HCl\)
\(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)
\(4K+O_2\rightarrow2K_2O\)
\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
\(CaCl_2+Fe\left(OH\right)_3\rightarrow\) Không phản ứng
\(BaCl_2+H_2SO_4\rightarrow2HCl+BaSO_4\downarrow\)
1. 2K +2 \(H_2O\)\(\rightarrow\) 2KOH + \(H_2\)
2. 4Al +3 \(O_2\)\(\rightarrow\) 2\(Al_2O_3\)
3. 2Al +3 \(H_2SO_4\)\(\rightarrow\) \(Al_2\left(SO_4\right)_3\) + \(3H_2\)
4. \(Al_2O_3\) + 6 HCl \(\rightarrow\) 2\(AlCl_3\) + 3\(H_2O\)
5. 3NaOH + \(H_3PO_4\)\(\rightarrow\) \(Na_3PO_4+3H_2O\)
6. Fe + \(2HCl\rightarrow FeCl_2+H_2\)
~Chúc bạn học tốt
P /S: Bạn nhớ cẩn thận trong cách viết hoa mấy cái kí hiệu hóa học nhé bạn!Dương Tử Yến.
1) 2Fe + 3Cl2 = 2FeCl3
2) 4Al + 3O2 = 2Al2O3
3) 4K +O2 = 2K2O
4) 2Al(OH)3 = Al2O3 + 3H2O
5) Al2O3 + 6HCl = 2AlCl3 + 3H2O
6) 3H2 + N2 = 2NH3
7)P2O5 + 3H2O = 2H3PO4
8) 2Al + 3CuCl2 = 2AlCl3 +3Cu
9)2Cu (NO3)2 = 2CuO + 4NO2 +O2
10) Cu + 2AgNO3 = Cu(NO3)2 + 2Ag
Al2O3
Al203 + H2O
Na2O
1. \(4:3:2\)
2. \(4:1:2\)
3. \(2:1:3\)
4. \(1:6:2:3\)
5. \(2:6:2:3\)
6. \(1:2:1:1\)
7. \(1:3:1:3\)
8. \(1:2:2:1\)
9. \(3:2:3:2\)
10. \(1:1:2:1\)