How to determine if gas is helium? (Out of Methane,Nitrogen,CO2,Oxygen,Argon,Hydrogen.?

Answer 1

being an inert gas it is quite towards different metals and non-metals. Moreover the liquifing temperature the another basis for the same ,helium has the greatest liquifing temperature among the given gases.

Answer 2

Assume that the gas is in a ballon.
1) Does the ballon float? Nitrogen,CO2,Argon are all heavier than air. Helium is also lighter than air.

2) Does the gas burn? Either on it's own or with a mixture of air. Oxygen will burn on its own, methane will burn in the presence of air. All the others wont.

3) Assuming that tha gases are pure (this can be dangerous) Take a deep breath out of the ballon. Does your voice go squeeky? Helium makes you sound like Mickey Mouse.

4) Does the gas react with other species? Nitrogen,Argon, and Helium in a very simplistic way are all considered Inert.

5) Instrumentation is another method to determine the is it helium, either by FID or TCD would be the best method.

Hope this helps.

Answer 3

Density (Helium is the second lightest gas). Inflammability (Helium is inert, methane burns). Liquifying temperatures (only hydrogen liquefies at a lower temperature).

Mass spectrometry or an electric discharge based emission spectrometer also will confirm whether the gas is helium or something else.

Answer 4

you would need more information for this question. Do you mean by smell? There is a way to tell by color but i forgot what color it is and it involves the gas to be contained and put in against a special light.

Answer 5

i can really say maybe u shuld carry out laboratory test for heliu

Answer 6

like other nobel gases you can it only determine by mass spectroscopy or specral spectroscopy.