How can i know what kind of gas i have in my jar?

[mScientist]

How can I know what kind of gas I have in a closed jar?

Is there any experiments I can do to know what kind of gas I have?

 

thanks.

[Suxamethonium]

lol... there are lots of tests- some more affordable than others. Colour, smell, and density are all fairly easily determined. As is pH. You could test for oxidising properties (O₂, Cl₂, N₂O for example) or flammability (H₂ or HCs for example- if so, run an ms on it). You could measure its UvVis absorbance to compare curves with known (suspected) compounds. Various gas tests like CO₂/limewater tests could be imployed. Depending on what the application is, its only likely to be a select few gases- it shouldn't be too hard to deduce it from logic and trivial data alone.