Demonstrate chemical reaction between CO2 and NAOH Conclusion of experimental phenomenon 1. Pass CO2 into NAOH solution without obvious phenomenon. The CACO3 generated in the second step of the reaction is 2. Take the solution obtained from the above experiment and prove that the chemical reaction occurs when white precipitation occurs. In the test tube, drop the calcium chloride solution 3. Drop HCL into the white precipitate. What is the deficiency of this experiment? Conclusion of experimental phenomenon 1. Pass CO2 to CACO3 in the second step of reaction formation without obvious phenomenon in NAOH solution, 2. Take the solution obtained from the above experiment to form white precipitate, indicating that there is carbonate new product in reaction 1. In a test tube, the formation of a calcium chloride solution drops in, proving that chemistry occurs 3. Drop HCL white precipitate into white precipitate to dissolve and react There are bubbles.

Demonstrate chemical reaction between CO2 and NAOH Conclusion of experimental phenomenon 1. Pass CO2 into NAOH solution without obvious phenomenon. The CACO3 generated in the second step of the reaction is 2. Take the solution obtained from the above experiment and prove that the chemical reaction occurs when white precipitation occurs. In the test tube, drop the calcium chloride solution 3. Drop HCL into the white precipitate. What is the deficiency of this experiment? Conclusion of experimental phenomenon 1. Pass CO2 to CACO3 in the second step of reaction formation without obvious phenomenon in NAOH solution, 2. Take the solution obtained from the above experiment to form white precipitate, indicating that there is carbonate new product in reaction 1. In a test tube, the formation of a calcium chloride solution drops in, proving that chemistry occurs 3. Drop HCL white precipitate into white precipitate to dissolve and react There are bubbles.

1. There is no obvious phenomenon when CO2 is introduced into NAOH solution.
2. Take the solution obtained from the above experiment into the test tube, and drop the calcium chloride solution to form white precipitate (CACO3), which indicates that the reaction 1 has the formation of carbonate new substances and proves that the chemical reaction has occurred.
3. Drop HCL white precipitate into the white precipitate to dissolve, with bubbles.
Q: What is the shortcoming of this experiment?
Your subject is so messy.
There should be no shortage.

X+HCL→Y+NaOH→Z→X may represent A.Mg B.Fe (OH)3 C.Fe2O3 D.K2O In the following chemical→Y+NaOH→Z→X may represent A. Mg B. Fe (OH)3 C.Fe2O3 D.K2O

Option C
This is the whole process.
Formation of ferric chloride from ferric oxide and hydrochloric acid
Production of ferric hydroxide from ferric chloride and sodium hydroxide
Hot-formed water and iron oxide reinforced by iron hydroxide
And then the X is regenerated.

Option C
This is the whole process.
Production of ferric chloride from ferric oxide and hydrochloric acid
Production of ferric hydroxide from ferric chloride and sodium hydroxide
Hot-formed water and iron oxide reinforced by ferric hydroxide
And then the X is regenerated.

Select C
This is the whole process.
Production of ferric chloride from ferric oxide and hydrochloric acid
Production of ferric hydroxide from ferric chloride and sodium hydroxide
Fe (OH)< sub >2 strengthens the thermal formation of water and iron oxide
And then the X is regenerated.