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Is the law of mass conservation calculated by the invariance of element species before and after chemical reaction?
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Chemical equation for the preparation of iron sulfate from dilute sulfuric acid and a small amount of copper oxide powder from the charcoal powder (emergency) Chemical equation for the preparation of iron sulfate from dilute sulfuric acid and the removal of a small amount of copper oxide powder from charcoal powder
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RELATED INFORMATIONS
- 1. A literal expression for the reaction of carbon dioxide with calcium hydroxide to produce calcium carbonate and water
- 2. In the series of Al3+→Al (OH)3→AlO2-→()→Al3+ changes,() A. Al (OH)3 B.AlCl3 C.HCl D.NaOH Why?
- 3. Is copper hydroxide a strong electrolyte and an ionic compound? What is the relationship between ionic compounds and strong electrolytes?
- 4. Like CH3- CH - CH2- CH3↓ CH3 You tell me the organic matter! Not at all! Isn't that the first... Like CH3-CH-CH2-CH3 ↓CH3 Talk to me about your organics! Not at all! Isn't the hydrogen in the first CH3 not enough, borrowed one from the hydrogen in CH! That's five carbons. That's not enough hydrogen! Like CH3- CH - CH2- CH3↓ CH3 You say this organic matter to me! Not at all! Isn't that the first... Like CH3-CH-CH2-CH3 ↓CH3 Talk to me about your organics! Not at all! Isn't the hydrogen in the first CH3 not enough, borrowed one from the hydrogen in CH! That's five carbons. That's not enough hydrogen!
- 5. Chemical Reaction Equation for KOH+NaHCO3, Ion Equation
- 6. Manganese dioxide appears in the laboratory when potassium permanganate and hydrogen peroxide are used to produce oxygen. A Manganese dioxide is a reactant in both reactions B Manganese dioxide is a product in both reactions C Manganese dioxide is a catalyst in both reactions D Manganese dioxide is a product in the former reaction and a catalyst in the latter.
- 7. Chemical equation for oxygen production from hydrogen peroxide and potassium permanganate in laboratory
- 8. The laboratory uses potassium permanganate, potassium chlorate and hydrogen peroxide solutions to produce oxygen. Please answer the following questions. The laboratory uses potassium permanganate, potassium chlorate and hydrogen peroxide solutions to produce oxygen. Please answer the following questions. (1) It is correct to state that A can be used with the same gas generating apparatus B can be used with the same gas to the same basic reaction type D reaction conditions are the same (2) In the preparation process, the catalyst to be added to the raw material in advance is (fill in the raw material name)______________ (3) If the solid residue after potassium permanganate oxygen production is added to potassium chlorate, the reaction process of potassium chlorate oxygen production can also be accelerated because ______________________________
- 9. The experiment-the process of producing oxygen with potassium permanganate, hydrogen peroxide, potassium chlorate, the difference and the same The experiment -- the process of producing oxygen with potassium permanganate, hydrogen peroxide, potassium chlorate, the difference and the same
- 10. The advantage of producing oxygen with hydrogen peroxide is.
- 11. Chemical formula of copper ion for caustic soda inspection
- 12. Why does the separating funnel control the reaction rate? When producing oxygen with hydrogen peroxide Why can the separating funnel control the reaction rate? When producing oxygen with hydrogen peroxide
- 13. What should be placed in a conical flask in a hydrogen peroxide and manganese dioxide oxygen production facility? What should I put in the funnel?
- 14. In the experiment of producing oxygen from hydrogen peroxide, if the separating funnel is changed into a long-neck funnel, what are the consequences
- 15. Production of Oxygen by Hydrogen Peroxide One student mixed 50 g hydrogen peroxide solution with 1 g manganese dioxide to produce oxygen. After complete reaction, the remaining mixed mass was weighed to be 49.4 G 1. Quality of oxygen produced by reaction 2. What is the mass fraction of hydrogen peroxide in the hydrogen peroxide solution used by the student? Manganese dioxide is only used here as a catalyst. Why should it be added? Can you explain the process and the analysis?
- 16. Production of Oxygen by Hydrogen Peroxide In this experiment, the method of "slowly adding hydrogen peroxide solution to the container containing manganese dioxide to produce and collect oxygen" has the advantage of "adding manganese dioxide to the tube containing hydrogen peroxide solution to produce oxygen ".
- 17. Comparing the production of carbon dioxide in the laboratory with the production of oxygen from potassium permanganate, the following statements are correct:() A. Gas generator may be the same B. Same reaction conditions C. Gas collection methods may be the same D. Same basic reaction type
- 18. Effect of Separating Funnel on Oxygen Production by Hydrogen Peroxide
- 19. What is the procedure for the double hydrolysis of aluminum metaaluminate ions? Why does not meta-aluminate and hydroxide ions form after hydrolysis of meta-aluminate? Thank you ~
- 20. Is it only the acid which is weaker than carbonic acid that can double hydrolyze with aluminum and ammonium ions? Is it only the acid less acidic than carbonic acid that can double hydrolyze with aluminum and ammonium ions?