Question

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

Answer 1

Well, you'll have to give your equation of state if you want my answer to be more accurate... But since you did not mention ideality, I will have to assume an ideal gas...

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We also utilize the latest RTP and STP from IUPAC:

• RTP: `25^@ "C"` and `"1 bar"`, just like for the thermodynamic standard state
• STP: `0^@ "C"` and `"1 bar"`, after 1982, i.e. today...

And thus, its MOLAR volume is given by

`color(blue)(barV_(RTP)^"id") = (RT_(RTP))/P`

`= (("0.083145 L"cdot"bar/mol"cdot"K")("298.15 K"))/("1 bar")`

`=` `color(blue)("24.790 L/mol")`

or

`color(blue)(barV_(STP)^"id") = (RT_(STP))/P`

`= (("0.083145 L"cdot"bar/mol"cdot"K")("273.15 K"))/("1 bar")`

`= (273.15)/(298.15)barV_(RTP)^"id"`

`=` `color(blue)("22.711 L/mol")`