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Concentration

Posted: Sun Jan 12, 2020 10:25 pm
by Alison Trinh 1E
Why do we not use units for concentration?

Re: Concentration

Posted: Sun Jan 12, 2020 10:29 pm
by Eesha Chattopadhyay 2K
We use units for concentration, but don't use it for the equilibrium constant.

Re: Concentration

Posted: Sun Jan 12, 2020 10:33 pm
by kendal mccarthy
Are you talking about Kc? Because Kc itself doesn't have units because it is a constant. But in order to get a correct value for Kc there are units in the equation ([products]/[reactants]) that are represented by brackets, [ ]. These brackets represent molarity or mol/L.

Re: Concentration

Posted: Sun Jan 12, 2020 10:38 pm
by SVajragiri_1C
Concentration does have a unit (moles/liter). But, equilibrium constants do not have units.

Re: Concentration

Posted: Sun Jan 12, 2020 10:38 pm
by JesseAuLec1Dis1G
The units aren't used because molarity isn't considered over an amount of time. K is a constant so time is not considered.

Re: Concentration

Posted: Sun Jan 12, 2020 10:56 pm
by Martina
You do use units for concentration, but not the equilibrium constant because the units of products over reactants cancel out.

Re: Concentration

Posted: Sun Jan 12, 2020 11:00 pm
by sarahsalama2E
concentration does have units, moles per liter, but equilibrium constant does not.