Units

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Jada Brown 2H
Posts: 100
Joined: Sat Aug 17, 2019 12:15 am

Units

Postby Jada Brown 2H » Thu Jan 09, 2020 3:06 pm

Do we write in the units on the partial pressure or concentration of a certain reactant or product we are solving for when given a K value and all other pressures or concentrations?

vanessas0123
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

Re: Units

Postby vanessas0123 » Thu Jan 09, 2020 3:11 pm

[concentration].
(pressure) for when there are subscripts / coefficients before the products or reactants.
K values don't have units because they cancel out, from what I know.

DanielTalebzadehShoushtari2A
Posts: 53
Joined: Fri Aug 02, 2019 12:16 am

Re: Units

Postby DanielTalebzadehShoushtari2A » Thu Jan 09, 2020 3:14 pm

Yes. K is unitless, but concentrations and pressures always have units. In a problem like you described, your final answer would have units.

Ellis Song 4I
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: Units

Postby Ellis Song 4I » Thu Jan 09, 2020 4:01 pm

K values do not have units

Caroline Beecher 2H
Posts: 51
Joined: Wed Nov 14, 2018 12:21 am

Re: Units

Postby Caroline Beecher 2H » Thu Jan 09, 2020 4:55 pm

K, being the equilibrium constant, itself does not have units but when writing in values for the concentration or pressure it is definitely good to add them in. For example it might be molar (M) for concentration or atmospheres (atm) for pressure.


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