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Based on the experiment "Study of the relationship between the boiling point of a liquid and the atmospheric pressure ", the following questions were answered What is the indication of the thermometer during boiling? When the water is boiling, a large amount of "white gas" is seen around the mouth of the bottle. During the formation of the "white gas ", the physical state changes are _____. After the water is boiling, the alcohol lamp is removed, and the water pavilion stops boiling. After a while, the syringe is connected to the mouth of the flask, and then the syringe piston is pulled outwards. The phenomenon that will be seen is __________. The conclusion of the experiment is __________________________.
No change
Water changes from liquid to gaseous water vapor, which condenses into liquid droplets
Water re-boiling
Decrease the pressure and the boiling point of water decreases
No change
Water changes from liquid to gaseous water vapor, which condenses into liquid droplets
Water re-boiling
Decrease the pressure, the boiling point of water decreases
Explore the relationship between the boiling point of a liquid and atmospheric pressure?
The lower the pressure, the lower the boiling point
In a vacuum, without air pressure, the boiling point of water is zero
RELATED INFORMATIONS
- 1. What is the relationship between altitude and atmospheric pressure and boiling point?
- 2. Atmospheric pressure and boiling point Where air pressure is low, the boiling point of the liquid is low, on the contrary, the boiling point is high. Why? Atmospheric pressure and boiling point Where air pressure is low, the boiling point of the liquid is low, On the contrary, the boiling point is high. Why?
- 3. Relation between pressure and altitude, temperature and boiling point High pressure, low temperature Low air pressure and high temperature I know that. But... High air pressure, And... We know that ordinary pots are hard to cook on high mountains. Is it because the pressure is low, the boiling point is low? My head is a mess. Sos Also, if the pressure is low, the boiling point is low, then I want to ask, then according to the pressure is low, the temperature is high, the temperature should be high. But the higher the altitude, the lower the temperature
- 4. The boiling point of all liquids is when the pressure decreases and when the pressure increases
- 5. Why does the pressure decrease and the boiling point decrease
- 6. If the boiling point of water is 100.d egree. C. and the boiling point of alcohol is 78.5.d egree. C., the liquor (which is a mixture of alcohol and water) is filled in a container and placed in water always at 100.d egree. C., then () A. Alcohol does not boil, water does B. Alcohol boils, water does not C. Both alcohol and water boil D. Neither alcohol nor water boils
- 7. Zinc sulfate (ZnSO4) and the lightest gas hydrogen can be prepared by reaction of zinc particles with dilute sulfuric acid (H2SO4) in the laboratory. If the hydrogen density is 0.09g/L in standard case, can you know the volume of hydrogen produced in standard case?
- 8. What are the four meanings of the chemical formula H2O?
- 9. What does the chemical formula H2O mean
- 10. At room temperature, the dissolved 12.5 CuSO4 5H2O in 27.5 g of water is exactly saturated, and the density is 1.21 g/cm3 to determine the amount and concentration of CuSO4
- 11. Why does the boiling point of a liquid rise after the pressure rises? The boiling point of water is 100°C at standard atmospheric pressure, while the boiling point in the pressure cooker is 110-120°C. Why? Please answer in more detail. It would be better to explain it in terms of molecular motion. Why does the boiling point of a liquid increase with pressure? The boiling point of water is 100°C at standard atmospheric pressure, while the boiling point in the pressure cooker is 110-120°C. Why? Please answer in more detail, preferably in terms of molecular motion.
- 12. Can calcium hydroxide and hydrochloric acid undergo a metathesis reaction
- 13. Ammonium sulfate added to hydrated lime grinding will ask ammonia? Ammonium sulfate added to hydrated lime grinding will ask ammonia gas? Will ammonium sulfate be added to the slaked lime for grinding?
- 14. Equation for mixed grinding of ammonium chloride crystals and hydrated lime Ammonium chloride crystals and slaked lime are mixed and ground to produce calcium chloride and water, which at the same time produces an ammonia What is the equation for the reaction? What test paper can be used to test NH3? Equation for mixed grinding of ammonium chloride crystals and hydrated lime Ammonium chloride crystals and slaked lime are mixed and ground to produce calcium chloride and water, at the same time produces an ammonia odor What is the equation for the reaction? What test paper can be used to test NH3?
- 15. What is the reaction equation for calcium hydroxide and sulfur dioxide, and how do you know what to combine with what
- 16. Reaction Equation of Calcium Hydroxide and Sulfur Dioxide
- 17. What is the chemical equation for the reaction of sulfur dioxide and hydrated lime? CaSO4 or CaSO3?
- 18. Reaction Chemical Formula of Calcium Hydroxide and Ammonium Sulfate
- 19. Chemical equation and grinding tool for mixing a small amount of ammonium sulfate crystals with hydrated lime
- 20. Reaction equation of ammonium nitrate and hydrated lime grinding Such as title Reaction Equation of ammonium nitrate and hydrated lime grinding Such as title