## Pressure in calculating Q

$E_{cell} = E_{cell}^{\circ}-\frac{RT}{nF}\ln Q$

Lucia H 2L
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### Pressure in calculating Q

How does pressure affect the calculation of Q? Is the equation different than just [P]^n/[R]^n ?

Andy Nguyen 1A
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Joined: Thu Jul 27, 2017 3:00 am

### Re: Pressure in calculating Q

I think Q is still calculated the same, but instead of using concentrations you are using pressures.

404995677
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### Re: Pressure in calculating Q

make sure when you are given the concentrations or pressure that they are the same units!

Max Mazo 2C
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### Re: Pressure in calculating Q

If you remember from 14A as long as we are studying something in a gaseous state we can use partial pressure or concentration to calculate Q since the pressure of gas will also affect the reaction direction.

Miguel Velasco 2J
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### Re: Pressure in calculating Q

When calculating Q for a reaction consisting of gases, Molarity and partial pressures are used.

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