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Ca(H2PO4)2: muối axit: canxi đihiđrophotphat
NaHSO4: muối axit: natri hiđrosunfat
CaCO3: muối trung hòa: canxi cacbonat
Fe(OH)2: sắt (II) hiđroxit
Mg(NO3)2: muối trung hòa: magie nitrat
FeS: muối trung hòa: sắt (II) sunfua
NaCl: muối trung hòa: natri clorua
BaCl2: muối trung hòa: bari clorua
CuSO4: muối trung hòa: đồng (II) sunfat
Cu(HSO4)2: muối axit: đồng (II) hiđrosunfat
Cu(H2PO4)2: muối axit: đồng (II) đihiđrophotphat
CH4+2 O2 ---to-->.......CO2+2H2O
4P + 5O2--to---->...2P2O5.....
SO3+H2O...-------> H2SO4
P2O5+3H2O->2H3PO4
2KMnO4 ---to----->......K2MNO4...+......MnO2..+..O2.....
2KClO3-------->..2KCl.......+...3.O2...
\(CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\\ 4P+5O_2\underrightarrow{t^o}2P_2O_5\\ P_2O_5+3H_2O\rightarrow2H_3PO_4\\ 2KMnO_4\underrightarrow{t^o}K_2MnO_4+MnO_2+O_2\\ 2KCl\xrightarrow[xtMnO_2]{t^o}2KCl+3O_2\)
2O2+3Fe-to>Fe3O4
Fe3O4+4H2-to>3Fe+4H2O
2Fe+3Cl2-to>2Fecl3
Fe+2HCl->Fecl2+H2
\(3Fe+2O_2\rightarrow\left(t^o\right)Fe_3O_4\)
\(Fe_3O_4+4H_2\rightarrow\left(t^o\right)3Fe+4H_2O\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
- 2Al + 3H2SO4 --> Al2(SO4)3 + 3H2
Tỉ lệ Al : H2SO4 : Al2(SO4)3 : H2 = 2 : 3:1:3
- 2SO2 + O2 --to--> 2SO3
Tỉ lệ SO2 : O2 : SO3 = 2:1:2
- 2Fe(OH)3 --to--> Fe2O3 + 3H2O
Tỉ lệ Fe(OH)3 : Fe2O3 : H2O = 2:1:3
\(a,\%Na=\dfrac{23}{85}.100\%=27,06\%\\ \%N=\dfrac{14}{85}.100\%=16,47\%\\ \%O=100\%-27,06\%-16,47\%=56,47\%\\ b,\%Al=\dfrac{54}{234}.100\%=27,1\%\\ \%C=\dfrac{36}{234}.100\%=15,4\%\\ \%O=100\%-27,1\%-15,4\%=57,5\%\)
\(c,\%N=\dfrac{28}{79}.100\%=35,4\%\\ \%H=\dfrac{4}{79}.100\%=5,1\%\\ \%O=100\%-35,4\%-5,1\%=59,5\%\)
\(M_{NaNO_3}=23+14+16.3=85\left(\dfrac{g}{mol}\right)\\ \Rightarrow\%m_{Na}=\dfrac{23.100\%}{85}=27\%\\ \%m_N=\dfrac{14.100\%}{85}=16,47\%\\ \Rightarrow\%m_O=100\%-\left(16,47\%+27\%\right)=56,53\)
2Na + 2H2O --> 2NaOH + H2
2Cu + O2 --to--> 2CuO
2KClO3 --to--> 2KCl + 3O2
2KMnO4 --to--> K2MnO4 + MnO2 + O2
CuO + H2 --to--> Cu + H2O
2Al + 3H2SO4 --> Al2(SO4)3 + 3H2
2Na + 2 H2O → ...2NaOH.........+.....H2....
2Cu +.....O2.......→ 2CuO
2KClO3 →..2.KCl......+.......3O2.....
2KMnO4 →...K2MnO4......+....MnO2.....+....O2....
...H2.......+....CuO......→ Cu + H22O
2Al + 3H2SO4 →...Al2(SO4)3.....+..H2.......
1.6KOH + Al2(SO4)3 → 3K2SO4 + 2Al(OH)3
2.2KMnO4 →K2MnO4 + MnO2 + O2
3.Fe3O4 + 4CO → 3Fe + 4CO2
4. 2KClO3→ 2KCl + 3O2
5. 2Al(OH)3 + 3H2SO4→ Al2(SO4)3 + 3H2O