![](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>)
According to the requirements, write the following response expressions (preferably junior high school content) The decomposition reaction with water is as follows Decomposition reaction with water formation: In the presence of water The formation of water is neither a combination reaction nor a decomposition reaction
1. Water (power on) → hydrogen + oxygen
2. Sodium bicarbonate → sodium carbonate + carbon dioxide + water
3. Hydrogen + oxygen (ignition) → water
4. Hydrogen chloride + sodium hydroxide → sodium chloride + water
Chemical problems in junior high school
The clarified lime water becomes turbid with carbon dioxide gas
Ca(OH)2+CO2=CaCO3+H2O
Calcium hydroxide + carbon dioxide - calcium carbonate + water
Literal expression of reaction between lime water and carbon dioxide
Calcium hydroxide + carbon dioxide -- calcium carbonate + water
It is neither a chemical reaction nor a decomposition reaction
Literal expression of reaction between carbon dioxide and clarified lime water
CO2+Ca(OH)2=CaCO3+H2O
CaCO3 is precipitate
Literal and symbolic expressions of reaction of carbon dioxide into clarified lime water
Carbon dioxide + calcium hydroxide - calcium carbonate + water
CO2 +Ca(OH)2===CaCO3↓+H2O
What is the literal expression of the decomposition reaction with water?
There is water to participate in the decomposition reaction of the text expression? Answer!
If water is a product, the equation is: sodium bicarbonate = = heating = = sodium carbonate + water + carbon dioxide
If water is a reactant, the equation is: water = = electricity = = hydrogen + oxygen
Water decomposes when it is electrified, and the process is represented by a literal expression
Correct answer,
Water (electrified) - hydrogen + oxygen
Water can decompose under certain conditions
Water is electrified and decomposed into hydrogen and oxygen
The literal expression of water is neither a combination reaction nor a decomposition reaction
Sulfur dioxide + sodium hydroxide → sodium sulfite + water
The literal expression of the reaction between sulfur dioxide and oxygen
Sulfur dioxide + oxygen = = = = = (reversible number, condition: V2O5 as catalyst, heating) sulfur trioxide
RELATED INFORMATIONS
- 1. Equation for the reaction of sulfur dioxide with water
- 2. 1, - 2,3, - 4,5, - 6,7, - 8 and so on. What is the number 2004? What is the number 2005?
- 3. How many standard bricks per cubic meter
- 4. -1 / 2,2 / 3, - 3 / 4,4 / 5, - 5 / 6,7 / 8... Guess the sum of the nth number and the nth plus one number (n is odd)
- 5. -The numbers are - 3,4, - 6,8
- 6. Find the nth number of the rule
- 7. -1,1,3,5,7... According to this rule, what is the nth number
- 8. What's the fifth of the sixth
- 9. The nth number can be expressed as
- 10. All the ways to produce oxygen
- 11. What is the literal expression of the reaction in the experiment of aluminum foil burning in oxygen? If the oxygen is replaced by air, the chemical reaction will take place__ The reason is that____
- 12. What is the volume formula of trapezoidal cylinder? It's just that the circles at the top and bottom of the cylinder are different
- 13. A half cylinder is 10 cm in diameter and 40 cm in height. What's the surface area?
- 14. Make a cylinder, the side area is 9.42 square centimeters, the height is 3 centimeters, its bottom radius is______ Cm, the surface area is______ Square centimeter
- 15. What is the volume formula of cylinder
- 16. The volume of a 2-meter-long steel cylinder is calculated by increasing its surface area by 16 square decimeters
- 17. The volume of a cylinder is equal to the area of the bottom multiplied by the height______ ．
- 18. If the height of a cylinder increases by 1cm, its side area will increase by 50.24cm. What is the volume of the cylinder
- 19. A cylinder with a diameter of 8 cm at the bottom and a height of 12 cm is cut into two and a half cylinders along the diameter, and the surface area is increased by () square centimeters
- 20. The height of two cylinders is equal, the bottom radius of the big cylinder is equal to the bottom diameter of the small cylinder, and the volume of the small cylinder is 12______ ．