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Anonymous users2024-02-061. Sodium is placed in air 4Na + O2 = 2 Na2O
2. Sodium ignites 2Na +O2 ***** Na2O2 in air
3. Sodium and sulfur react 2Na + S = Na2S
4. Sodium and water react 2Na + 2H2O = 2NaOH + H2
5. Reaction of sodium and copper sulfate solution.
2na + cuso4 + 2h2o = cu(oh)2 ↓+na2so4 +h2 ↑
6. Sodium and ethanol reaction 2Na + 2ch3ch2oh = 2ch3ch2ona + H2
7. Sodium oxide and water react Na2O + H2O = 2NaOH
8. Sodium oxide and carbon dioxide reaction Na2O + CO2 = Na2CO3
9. Sodium oxide and hydrochloric acid react Na2O + 2HCl = 2NaCl + H2O
10. Sodium peroxide and water react 2Na2O2 + 2H2O = 4NaOH + O2
11. Reaction of sodium peroxide and carbon dioxide 2Na2O2 + 2CO2 = 2Na2CO3 + O2
12. Sodium peroxide and hydrochloric acid react 2Na2O2 + 4HCl = 4NaCl + 2H2O + O2
13. Sodium bicarbonate is decomposed by heat.
2nahco3 △ na2co3 + co2↑+ h2o
14. Sodium carbonate and hydrochloric acid reaction.
na2co3 +2hcl = 2nacl + co2↑ +h2o
na2co3 +hcl = nacl + nahco3
15. Sodium bicarbonate and hydrochloric acid react NaHCO3 +HCl = NaCl + CO2 +H2O
16. Sodium carbonate and calcium hydroxide react Na2CO3 +Ca(OH)2 = CaCO3 +2NaOH
17. Sodium bicarbonate and sodium hydroxide react NaHCO3 + NaOH = Na2CO3 + H2O
18. Reaction of sodium bicarbonate and calcium hydroxide.
2nahco3 + ca(oh)2 = caco3↓+ na2co3 + 2h2o
nahco3 + ca(oh)2 = caco3↓+ naoh + h2o
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Anonymous users2024-02-05Sodium carbonate plus dilute hydrochloric acid. Dilute sulfuric acid. Calcium chloride.
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Anonymous users2024-02-04Sodium and oxygen: (room temperature) 4Na+O2=2Na2O; (ignition) 2Na+O2=Na2O2. Sodium reacts with water:
2na+2h2o=2naoh+h2↑。Sodium reacts with sulfuric acid: 2Na + H2SO4 = Na2SO4 + H2.
Sodium oxide reacts with water: Na2O+H2O=2NaOH. Sodium peroxide reacts with carbon dioxide:
2na2o2+2co2=2na2co3+o2。
Sodium is a metallic element, and the element symbol is Na, English name sodium. In the periodic table, it is located in the 3rd period, group a, is the representative of alkali metal elements, soft texture, can react with water to form sodium hydroxide, release hydrogen, and the chemical properties are more active. Sodium is widely distributed in the form of salt on land and in the sea, and sodium is also one of the important components in human muscle tissue and nerve tissue.
Sodium is a silvery-white cube structure metal, soft and light can be cut with a knife, the density is smaller than water, is, melting point, boiling point 883. The new facet has a silvery-white luster, which oxidizes in the air and turns into a dark gray color, which is corrosion-resistant. Sodium is a good conductor of heat and electricity and has good magnetic conductivity, and potassium-sodium alloy (liquid state) is a thermal conductive agent for nuclear reactors.
Sodium element also has good ductility and low hardness, and can be soluble in mercury and liquid ammonia, and soluble in liquid ammonia to form a blue solution. Hardens at -20.
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Anonymous users2024-02-03Categories: Education Science >> Entrance Examination >> College Entrance Examination.
Analysis: 1. Sodium is placed in air 4Na + O2 = 2Na2O
2. Sodium ignites 2Na +O2 ***** Na2O2 in air
3. Sodium and sulfur react 2Na + S = Na2S
4. Sodium and water react 2Na + 2H2O = 2NaOH + H2
5. Reaction of sodium and copper sulfate solution.
2na + cuso4 + 2h2o = cu(oh)2 ↓+na2so4 +h2 ↑
6. Sodium and ethanol react with mountain 2Na + 2ch3ch2oh = 2ch3ch2ona + h2
7. Sodium oxide and water react Na2O + H2O = 2NaOH
8. Sodium oxide and sliding pure carbon dioxide react Na2O + CO2 = Na2CO3
9. Sodium oxide and hydrochloric acid react Na2O + 2HCl = 2NaCl + H2O
10. Sodium peroxide and water react 2Na2O2 + 2H2O = 4NaOH + O2
11. Reaction of sodium peroxide and carbon dioxide 2Na2O2 + 2CO2 = 2Na2CO3 + O2
12. Sodium peroxide and hydrochloric acid react 2Na2O2 + 4HCl = 4NaCl + 2H2O + O2
13. Sodium bicarbonate is decomposed by heat.
2naHCO3 letter implicit NA2CO3 + CO2 + H2O
14. Sodium carbonate and hydrochloric acid reaction.
na2co3 +2hcl = 2nacl + co2↑ +h2o
na2co3 +hcl = nacl + nahco3
15. Sodium bicarbonate and hydrochloric acid react NaHCO3 +HCl = NaCl + CO2 +H2O
16. Sodium carbonate and calcium hydroxide react Na2CO3 +Ca(OH)2 = CaCO3 +2NaOH
17. Sodium bicarbonate and sodium hydroxide react NaHCO3 + NaOH = Na2CO3 + H2O
18. Reaction of sodium bicarbonate and calcium hydroxide.
2nahco3 + ca(oh)2 = caco3↓+ na2co3 + 2h2o
nahco3 + ca(oh)2 = caco3↓+ naoh + h2o
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Anonymous users2024-02-021. Sodium burns in the air (yellow mountain rock flushing flame) 2Na + O2 Na2O22, sodium reacts with water (floating, melting, swimming, amusing the sound, red) 2Na + 2H2O = 2NaOH + H2 2Na + 2H2O = 2Na+ +2OH - H2 3, Reaction of sodium peroxide with water (exothermic reaction, Na2O2 is a strong oxidizing agent, used for.
Several basic laws of chemical reactions, the law of conservation of mass, the law of conservation of atoms, the law of conservation of energy, these three laws are all introduced in your textbooks, and I won't talk nonsense here. >>>More
All the chemical equations for sodium and its compounds are:1. Sodium and oxygen reaction at room temperature: 4Na+O2=2Na2O. >>>More
hcl+agno3=agcl+hno3
nacl+agno3=nano3+agcl2mgcl+2agno3=mg(no3)2+agclh2so4+bacl2=2hcl+baso4h2so4+ba(no3)2=2hno3+baso4na2so4+bacl2=2nacl+baso4k2so4+ba(oh)2=2koh+baso4h2so4+ba(oh)2=baso4+2h2omgso4+ba(oh)2=mg(oh)2+baso4cuso4+ba(oh)2=cu(oh)2+baso4na2co3+2hcl=na2co3+h2o+co2na2co3+h2so4=na2so4+h2o+co2k2co3+2hno3=2kno3+h2o+co2caco3+2hcl=cacl2+h2o+co2caco3+2hno3=ca(no3)2+h2o+co2mgco3+2hcl=mgcl2+h2o+co2co2+2naoh=na2co3+h2o >>>More
Hey, I don't even want to write about it, didn't you learn all this in the academy?
1) cyclohexane + Cl2 --- light ---monochlorocyclohexane + HCl2) monochlorocyclohexane + NaOH ---ethanol, heated --- cycloethylene + NaCl + H2O >>>More