HW Problem 5G.7

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ASetlur_1G
Posts: 81
Joined: Fri Aug 09, 2019 12:17 am

HW Problem 5G.7

Postby ASetlur_1G » Mon Jan 06, 2020 9:20 pm

For 5G.7, the solutions manual uses Kc instead of Kp. If all of the reactants and products are in the gas phase, why aren't partial pressures used?

Justin Vayakone 1C
Posts: 90
Joined: Sat Sep 07, 2019 12:19 am

Re: HW Problem 5G.7

Postby Justin Vayakone 1C » Mon Jan 06, 2020 9:33 pm

My solutions manual uses partial pressures. Is your's seventh edition?

Diana Chavez-Carrillo 2L
Posts: 99
Joined: Fri Sep 28, 2018 12:18 am

Re: HW Problem 5G.7

Postby Diana Chavez-Carrillo 2L » Mon Jan 06, 2020 9:38 pm

I was confused as well as to why the solution manual did not write Kp and just wrote K. However, on the solution manual the ratio was written with "P" in front of each reactant or product which indicates that the ratio is the equilibrium of their partial pressures. Based on Lavelle's modules, he said that it is always good to specify next to the K if its P or C so when dealing with gas phases then write Kp to indicate that you are dealing with the equilibrium constant of partial pressures that have units in atmosphere (atm) or bar. When dealing with aqueous solutions then write Kc to show that your units are in concentration (moles/Liter).

ASetlur_1G
Posts: 81
Joined: Fri Aug 09, 2019 12:17 am

Re: HW Problem 5G.7

Postby ASetlur_1G » Tue Jan 07, 2020 12:08 pm

Oh okay I think I just don't have the latest edition

Maya Beal Dis 1D
Posts: 82
Joined: Sat Aug 17, 2019 12:16 am
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Re: HW Problem 5G.7

Postby Maya Beal Dis 1D » Tue Jan 07, 2020 2:10 pm

Do we have to write Kp or can we just write K? My solutions manual only writes K.


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