Question

What is the main difference between hydrogen chloride gas and hydrochloric acid?

Answer 1

Hint: As we know that both hydrogen chloride gas and hydrochloric acid have the same chemical or molecular formula which is HCl. But still both of these are in different physical states and have different properties. So we have to list out all the differences between them due to change in their phases.

Complete answer:
The main differences between hydrogen chloride gas and hydrochloric acid are listed below:-

Hydrogen Chloride Gas	Hydrochloric Acid
It is a chemical compound whose chemical formula is HCl.	It is a strong acidic compound whose chemical formula is HCl as well.
It is a hydrogen halide compound.	It is an acidic solution.
It is a colourless gas at room temperature.	It is an aqueous solution at room temperature.
Both its IUPAC name and common name is hydrogen chloride.	Its IUPAC name is Chlorane.
It has a non-acidic character.	It is highly acidic in nature and is among the strongest acids available.
This gas does not turn blue litmus paper or solution to red due to non-acidic character.	It turns blue litmus paper or solution to red as being acidic in nature.
This gas does not conduct electricity.	It is a good conductor of electricity.
It is not convenient to use as it is in gaseous state and can get out of control.	It is quite easy to use compared to hydrogen chloride gas.

Note:
The similarities between hydrogen chloride gas and hydrochloric acid are given below:-
-Both of these compounds are highly soluble in water.
-Also both chemical compounds form white fumes when being exposed to atmospheric water vapor.