![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
About sodium hydroxide and calcium hydroxide Both are strong bases, but why can sodium hydroxide be produced in the reaction between sodium bicarbonate and calcium hydroxide? I don't think it makes sense to force the weak 、、、
This is normal, the formation of calcium carbonate is precipitation, is the reaction, want to balance the same positive shift. Similarly, silica and sodium carbonate reaction, under high temperature conditions, carbon dioxide gas out, so that the reaction can be carried out. But carbonic acid is stronger than silicic acid, there is a typical weak strong, hydrogen sulfide and copper sulfate reaction to produce sulfuric acid, because copper sulfide is precipitation.
This is normal, the formation of calcium carbonate is precipitation, is the reaction, want to balance the same positive shift. Similarly, silica and sodium carbonate reaction, in high temperature conditions, carbon dioxide gas out, so that the reaction can be carried out. But carbonic acid is stronger than silicic acid, there is a typical weak strong, hydrogen sulfide and copper sulfate reaction to produce sulfuric acid, because copper sulfide is precipitation.
How to distinguish sodium hydroxide and calcium hydroxide? Forget carbon dioxide.
1. Dissolved in water respectively, easily soluble is sodium hydroxide, slightly soluble (turbid solution) is calcium hydroxide.
2. Dissolve a small amount in water and inject sodium carbonate solution to produce white calcium hydroxide precipitation.
3. Sodium hydroxide is easily deliquescent when exposed to air.
4. Flame reaction, yellow is sodium hydroxide, brick red is calcium hydroxide.
RELATED INFORMATIONS
- 1. What solution can be used to distinguish calcium hydroxide solution from sodium hydroxide solution?
- 2. Can excuse me and acidic potassium permanganate reaction of what organic matter? Is it possible for unsaturated hydrocarbons to react with acidic potassium permanganate solutions? Anything else? What organic matter can you react with acid potassium permanganate? Is it possible for unsaturated hydrocarbons to react with acidic potassium permanganate solutions? Anything else?
- 3. Is there a chemical reaction between alcohol and water
- 4. What kind of chemical reaction does wine have with some metal?
- 5. Chemical equation for burning aluminium in chlorine? Chemical equation of aluminum combustion in chlorine gas?
- 6. How to identify dilute sulfuric acid, dilute hydrochloric acid, sodium hydroxide solution, calcium hydroxide solution? Specific experimental process
- 7. 1 Reaction of sodium hydroxide and sulfuric acid 2 Reaction of calcium hydroxide solution and sulfuric acid 3 Reaction of copper hydroxide and hydrochloric acid 4 Reaction of copper hydroxide and sulfuric acid 5 Reaction of aluminum hydroxide and hydrochloric acid Complete the symbolic expression and indicate the basic reaction type to be reflected 1 Reaction of sodium hydroxide with sulfuric acid 2 Reaction of calcium hydroxide solution with sulfuric acid 3 Reaction of copper hydroxide with hydrochloric acid 4 Reaction of copper hydroxide with sulfuric acid 5 Reaction of aluminum hydroxide with hydrochloric acid Complete the symbolic expression and indicate the basic reaction type to be reflected
- 8. How to distinguish sodium chloride, sodium hydroxide and calcium hydroxide Preferably a chemical reaction.
- 9. Calcium hydroxide solution and sodium hydroxide solution, can be identified with dilute hydrochloric acid? Why?
- 10. Ion equation for introducing sufficient CO2 into clarified lime water CO2+ OH -= HCO3- right, why This is a question in the exercise book, and the answer is wrong I'm asking if there's enough CO2 Ion equation for introducing sufficient CO2 into clarified lime water CO2+ OH -= HCO3- right, why This is a question in the exercise book. The answer is wrong I'm asking if there's enough CO2
- 11. How to distinguish sodium hydroxide and calcium hydroxide?
- 12. Chemical equation for CO2 to clear lime water?
- 13. In a certain reaction system, there are reactants and products:o2.h2cro4.CR (OH)3.H2O.H2O2. In the known reaction, h2o2 only occurs as follows: H2O2~O2 is reversed... In a certain reaction system, there are reactants and products:o2.h2cro4.CR (OH)3.H2O.H2O2. In the known reaction, h2o2 only occurs as follows: H2O2~O2 Find the reaction equation
- 14. Is it possible to dissociate calcium hydroxide in the ion equation? Such as title Does the electrolyte dissolve in water?
- 15. Calcium hydroxide is slightly soluble, so can it be disassembled in the ion equation? Why?
- 16. Ion equation for reaction of magnesium oxide and dilute sulfuric acid?
- 17. Compared with the between magnesium, iron, copper and oxygen, and analyze the possible causes Compared with the reaction of magnesium, iron and copper with oxygen, which reasons may lead to the difference of difficulty and intensity of the reaction? Compare the reaction between magnesium, iron, copper and oxygen, and analyze the possible causes Compared with the reaction of magnesium, iron and copper with oxygen, which reasons may lead to the difference of difficulty and intensity of the reaction?
- 18. Add carbon dioxide to the calcium hydroxide solution until the solution becomes turbid and then clear, and then add excessive sodium hydroxide solution to become turbid. Why is the excess sodium hydroxide solution added later turbid? Add excessive carbon dioxide into the calcium hydroxide solution, the solution first becomes turbid and then becomes clear, and then add excessive sodium hydroxide solution to become turbid. Why is the excess sodium hydroxide solution added later turbid?
- 19. In the high ion equation, the micro-sol matter is not removed as a reactant, just like the ionic formula of MgCo3 reacting with HCl Please write down the ion equation for this reaction In the high ion equation, the micro-soluble matter is not removed as a reactant, just like the ionic formula of MgCo3 reacting with HCl Write down the ion equation for this reaction In the high ion equation, the micro-solutions are not removed as reactants, just like the ionic formula of MgCo3 reacting with HCl Write down the ion equation for this reaction
- 20. Which of the ion equations can or can not be disassembled? When changing the chemical equation to an ion equation ··· To be specific,··· should have examples... Which of the ion equations can or can not be broken? When changing the chemical equation to an ion equation ··· To be specific,··· should have examples...