Gaseous property
Gaseous property
| Color | Smell | Weight in comparison with the air | Eutexia to water | Property when I dissolved in water | |
| Oxygen | Colorlessness | Unavailable | Slightly heavy | It is hard to become loose | X |
| Carbon dioxide | Colorlessness | Unavailable | Heavy | It becomes loose a little | The acidity |
| Hydrogen | Colorlessness | Unavailable | Very light | It is hard to become loose | X |
| Ammonia | Colorlessness | Irritating odor | Light | Become loose | Alkaline |
| Nitrogen | Colorlessness | Unavailable | Light | It is hard to become loose | X |
| Hydrogen chloride | Colorlessness | Irritating odor | Heavy | Become loose | The acidity |
| Hydrogen sulfide | Colorlessness | The smell that the egg became addled | Heavy | Become loose | The acidity |
| Chlorine | Yellow green | Smell such as the sterilization of the pool | Heavy | Become loose | The acidity |
| Methane | Colorlessness | Unavailable | Light | It is hard to become loose | X |
※Because it is hard to dissolve in water to become “the X” with a property when I dissolved in water, I mean that there is not it in a water solution.
Each gaseous characteristic
I have work (助燃性) to help burn an oxygen … thing.
I let carbon dioxide … limewater be muddy white. It becomes the acid carbonated water when I dissolve in water.
I have work (the combustibility) that hydrogen … gas oneself burns.
It becomes the hydrochloric acid by dissolving in hydrogen chloride … water.
I provide chlorine … sterilization and the sterilization.
How to gather of gas
How to gather of gas has following three kinds.
How to gather gas which is hard to dissolve in water substituting method … water. An example: Oxygen and hydrogen and carbon dioxide
How to gather that it is easy to dissolve in upper displacement method … water, and density is smaller than air of gas. An example: Ammonia
How to gather that it is easy to dissolve in downward substituted law … water, and density has a bigger than air of gas. An example: Carbon dioxide
※I smell it as if looking up by hand when I smell the gas which I collected.
Outbreak of gas
I add oxygenated water (oxydol) to an oxygen … manganese dioxide.
How to gather: The water substituting method
Of the gas check; one: I bring an incense stick with the fire close and check flame becomes intense.
※You may use a lever in substitution for a manganese dioxide.
※The manganese dioxide works catalytic (promotion of the reaction) and is not related to outbreak of oxygen directly. The real reaction is oxygenated water → water + oxygen
I add hydrochloric acid to carbon dioxide … limestone (an eggshell and shell).
How to gather: The water substituting method or the downward substitution method
Of the gas check; one: I check I pour limewater and am muddy white.
I add acid (hydrochloric acid and sulfuric acid) to metal such as hydrogen … zinc or iron.
How to gather: The water substituting method
Of the gas check; one: I bring a match with the fire close and confirm that I make a sound with a blush and burn.
I heat a mixture of ammonia … ammonium chloride and calcium hydroxide.
How to gather: The upper displacement method
I distill nitrogen … air. ※I use difference between oxygen and boiling point of nitrogen.
How to gather: The water substituting method
Experiment of the fountain of the ammonia
It is solution indicating the red for phenolphthalein solution … alkalinity. It is colorless with the acidity and the neutrality.
I omit the figure.
[experiment]
I pour water into the round bottom flask with the ammonia in a filler.
[result]
The water which I added the phenolphthalein solution which was in the lower water tank to is drawn up and it becomes red and spouts out.
[reason of the result]
- Ammonia melts into water injected in a filler.
- A liquid is drawn up in one (atmospheric pressure falls) of which the gas in the round bottom flask decreases to as much as I dissolved in water by the bottom. (by atmospheric pressure)
- Because ammonia melted into a liquid drawn up, it became alkaline, and water became red.