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Question

What is the volume of a gas at RTP and STP?

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Solution

We also utilize the latest RTP and STP from IUPAC.

RTP : 250C and 1bar just like for the thermodynamic standard state
STP : 00C and 1bar after 1982
and thus its MOLAR volume is given by

¯VidRTP=RTRTPP

=(0.083145L.bar/mol.K)(298.15K)1bar

=24.790L/mol
or

¯VidRTP=RTRTPP

=(0.083145L.bar/mol.K)(273.15K)1bar

=273.15298.15¯VidRTP

=22.711L/mol

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