50分有追加求化学方程式 离子方程式(1)钠与水,钠与氧气,碳酸钠与澄清石灰水,碳酸氢钠受热分解(2)铝,氧化铝,氢氧化铝分别与氢氧化钠,硫酸反应(3)氯气与氢气,水反应;氯气通入溴化钠、碘化钾;溴水滴入碘化钾(4)乙烯使溴水退色;乙醇催化氧化;乙酸与乙醇酯化
50分有追加求化学方程式 离子方程式
(1)钠与水,钠与氧气,碳酸钠与澄清石灰水,碳酸氢钠受热分解
(2)铝,氧化铝,氢氧化铝分别与氢氧化钠,硫酸反应
(3)氯气与氢气,水反应;氯气通入溴化钠、碘化钾;溴水滴入碘化钾
(4)乙烯使溴水退色;乙醇催化氧化;乙酸与乙醇酯化
1. 2Na + 2H2O = 2NaOH + H2↑ .
2Na + 2H2O = 2Na+ + OH- + H2↑
4Na + O2 = 2Na2O
2Na + O2 = Na2O2
Na2CO3 + Ca(OH)2 = CaCO3↓ + 2NaOH;
Ca2+ + CO32- = CaCO3↓
2NaHCO3 = Na2CO3 + H2O + CO2↑
2. 2Al + 2NaOH + 2H2O = 2NaAlO2 + 3H2↑.
2Al + 2OH- + 2H2O = 2AlO2- + 3H2↑.
Al2O3 + 2NaOH = 2NaAlO2 + H2O.
Al2O3 + 2OH- = 2AlO2- + H2O.
Al(OH)3 + NaOH = NaAlO2 + 2H2O.
Al(OH)3 + OH- = AlO2- + 2H2O.
2Al + 3H2SO4 = Al2(SO4)3 + 3H2↑.
2Al + 6H+ = 2Al3+ + 3H2↑.
Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O.
Al2O3 + 6H+ = 2Al3+ + 3H2O.
2Al(OH)3 + 3H2SO4 = Al2(SO4)3 + 6H2O.
H+ + OH- = H2O.
3. Cl2 + H2 = 2HCl.
Cl2 + H2O = HCl + HClO.
Cl2 + H2O = H+ + Cl- + HClO
Cl2 + 2NaBr = Br2 + 2NaBr.
Cl2 + 2Br- = Br2 + 2Cl-.
Cl2 + 2KI = I2 + 2KCl.
Cl2 + 2I- = I2 + 2Cl-.
Br2 + 2KI = I2 + 2KBr.
Br2 + 2I- = I2 + 2Br-.
4. CH2=CH2 + Br2 --- CH2Br-CH2Br
2CH3CH2OH + O2 ---2CH3CHO + 2H2O (条件:铜/银作催化剂)
CH3COOH + CH3CH2OH --- CH3COOCH2CH3 + H2O(条件:浓硫酸,加热)
这些方程式好像是位高一的学生问的,人教版的新教材必修1和必修2里这些都有了,学习的时候要注意积累,这么多的方程式不是一次就能背下来的
(1)2Na+2H2O=2NaOH+H2↑
4Na+O2=2Na2O 2Na+O2=(点燃)Na2O2
Na2CO3+Ca(OH)2=CaCO3↓+2NaOH
2NaHCO3=(加热)Na2CO3+H2O+CO2
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你这五十分好难得啊~!
好复杂
1.2Na+2H2O=2NaOH+H2(气体) Na2CO3+Ca(OH)2=2NaOH+CaCO3(沉淀)
2NaHCO3=(加热)Na2CO3+H2O+CO2
2.2Al+2NaOH=2NaAlO2+3H2 2Al+3H2SO4=2Al2(SO4)3+3H2(气体)
Al2O3+3H2SO4=Al2(SO4)3+3H2O
Al(OH)3+NaOH=NaAlO2+2H2O 2Al(OH)3+3H2SO4=Al2(SO4)3+6H2O
3.H2+Cl2=2HCl Cl2+H2O=HCl+HClO Cl2+2NaBr=Br2+2NaCl
Cl2+2KI=I2+2NaCl Br2+2KI=I2+2NaBr
4.CH2=CH2+Br2--CHBr-CHBr CH3CH2OH+CuO--CH3CHO+Cu+H2O
CH3CH2OH+CH3COOH--CH3CH2COOCH3+H2O (条件:浓硫酸,加热)
问题太多了
1. 2Na + 2H2O = 2NaOH + H2 .2Na + 2H2O = 2Na+ + OH- + H2
4Na + O2 = 2Na2O
2Na + O2 = Na2O2
Na2CO3 + Ca(OH)2 = CaCO3 + 2NaOH; Ca2+ + CO32- = CaCO3
2NaHCO3 = Na2CO3 + H2O + CO2
2. 2Al + 2NaOH + 2H2O = 2NaAlO2 + 3H2.
2Al + 2OH- + 2H2O = 2AlO2- + 3H2.
Al2O3 + 2NaOH = 2NaAlO2 + H2O.
Al2O3 + 2OH- = 2AlO2- + H2O.
Al2O3 + 6H+ = 2Al3+ + 3H2O.
2Al(OH)3 + 3H2SO4 = Al2(SO4)3 + 6H2O.
H+ + OH- = H2O.
1.2Na + 2H2O = 2NaOH + H2 .2Na + 2H2O = 2Na+ + OH- + H2
4Na + O2 = 2Na2O
2Na + O2 = Na2O2
Na2CO3 + Ca(OH)2 = CaCO3 + 2NaOH; Ca2+ + CO32- = CaCO3
2NaHCO3 = Na2CO3 + H2O + CO2
2.2Al + 2NaOH + 2H2O = 2NaAlO2 + 3H2.
2Al + 2OH- + 2H2O = 2AlO2- + 3H2.
Al2O3 + 2NaOH = 2NaAlO2 + H2O.
Al2O3 + 2OH- = 2AlO2- + H2O.
Al(OH)3 + NaOH = NaAlO2 + 2H2O.
Al(OH)3 + OH- = AlO2- + 2H2O.
2Al + 3H2SO4 = Al2(SO4)3 + 3H2.
2Al + 6H+ = 2Al3+ + 3H2.
Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O.
Al2O3 + 6H+ = 2Al3+ + 3H2O.
2Al(OH)3 + 3H2SO4 = Al2(SO4)3 + 6H2O.
H+ + OH- = H2O.
3.Cl2 + H2 = 2HCl.
Cl2 + H2O = HCl + HClO.
Cl2 + H2O = H+ + Cl- + HClO
Cl2 + 2NaBr = Br2 + 2NaBr.
Cl2 + 2Br- = Br2 + 2Cl-.
Cl2 + 2KI = I2 + 2KCl.
Cl2 + 2I- = I2 + 2Cl-.
Br2 + 2KI = I2 + 2KBr.
Br2 + 2I- = I2 + 2Br-.
4.CH2=CH2 + Br2 --- CH2Br-CH2Br
2CH3CH2OH + O2 ---2CH3CHO + 2H2O
CH3COOH + CH3CH2OH --- CH3COOCH2CH3 + H2O
晕那
天啊,你高中怎么学化学的啊,都是课本的内容,随便买本参考书上都有的啊。