IS STP 22.7 OR 22.4??? SO CONFUSED!

[matt123]

some people told me it "changed" to 22.7 however ... im stuck because one of my questions has an answer as 22.7 ... the other answer is none of the above

not sure to go 22.7 or none of the above ( as 22.4 isnt there).

please help
!
thanks

[Zien]

Go with 22.4 Litres per mole. It may have changed by VCAA hasn't given any indication that they'll abide by the new standard.

[pi]

Go with 22.4 Litres per mole. It may have changed by VCAA hasn't given any indication that they'll abide by the new standard.

22.7 for matt123. He's not controlled by VCAA (in uni...)

[thushan]

IUPAC has changed the definition of STP from [273 K, 1 atm (101.3 kPa)] to [273 K, 1 bar (100.0 kPa)]. Hence their molar volume at STP has changed from 22.4 L/mol to 22.7 L/mol.

BUT VCAA has NOT caught onto this, so for VCE purposes, STP is 22.4 L/mol.

Matt, your uni seems to indicate that it's going by 22.7 L/mol from that MC question that you posted on another thread - so you go with 22.7 L. VCE students, go for 22.4 L.

[matt123]

thanks alot guys
appreciate it.

[Zien]

My bad, I didn't catch his signature before I responded. :p