Gas Mixtures and Concentrations 1

[fred2002]

The technical specification we have received from our customer says that 50 litre bottles will be supplied with a mixture of gas A and gas B at 200 barg. We also know that gas A will be 4.5% by volume and gas B 95.5% by volume. The temperature is also known.

How do I go about calculating what the concentration of each gas is in ppm?

I started off by using partial pressures, but ended up going round in circles.

Thanks in advance.

Fred

 

[zdas04]

1% is 10,000 ppmV.

You would have to share your gas species to get help on ppmM since my Periodic Table doesn't have an "A" and boron is not a gas at 200 barg and room temp.

David

 

[mbeychok]

Just one small addition to what zdas04 gave you: 1% by volume is 10,000 ppm by volume.

If you want to know ppm by weight, then we need to know the molecular weights of your gases A and B.

Milton Beychok
(Visit me at www.air-dispersion.com)
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