gas constant

Moderators: Chem_Mod, Chem_Admin

Ghadir Seder 1G
Posts: 134
Joined: Sat Sep 14, 2019 12:17 am

gas constant

Postby Ghadir Seder 1G » Sun Feb 09, 2020 11:05 pm

when I haveL. atm and I need to convert to joules for work, which gas constant should i use?

Kaitlyn Ang 1J
Posts: 116
Joined: Fri Aug 09, 2019 12:17 am
Been upvoted: 1 time

Re: gas constant

Postby Kaitlyn Ang 1J » Sun Feb 09, 2020 11:09 pm

If you have L.atm and want to get to joules, you wouldn't use a gas constant, but you would multiply by 101.325 J.L^-1.atm^-1 to get the L.atm to cancel out with only J left

Sofia Barker 2C
Posts: 101
Joined: Wed Sep 18, 2019 12:21 am

Re: gas constant

Postby Sofia Barker 2C » Sun Feb 09, 2020 11:57 pm

If you have a value with units L atm, use the gas constant R = 8.206 x 10^-2 L atm / mol K. You can also convert Latm to joules by using the conversion 101.325 joules per L atm. This allows you to use the other gas constant, R = 8.314 joules / mol K.

Daria Azizad 1K
Posts: 116
Joined: Thu Jul 25, 2019 12:15 am

Re: gas constant

Postby Daria Azizad 1K » Mon Feb 10, 2020 12:32 am

Use the gas constant that properly aligns with those units.


Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”

Who is online

Users browsing this forum: No registered users and 3 guests