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The Properties of Gases Hydrogen chloride gas
Physical Properties
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| Colour |
Colourless |
| Odour |
Pungent odour
Poisonous |
| Density compared to air (heavier or lighter) |
Heavier than air. |
Chemical Properties
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| Solubility in water |
Very soluble in water. It reacts with water to form hydrochloric acid. |
| Burning |
Does not support combustion |
| Moist pH paper |
Acidic reaction |
| Red rose petals |
No reaction |
| Specific test |
It will fume in moist air |
Footnotes:
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Dilute hydrochloric acid is one of the three common dilute acids used in the laboratory.
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Concentrated hydrochloric acid is used in the manufacture of many chemicals.
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