## Partial Pressure

Lily Benitez 2G
Posts: 63
Joined: Fri Sep 28, 2018 12:29 am

### Partial Pressure

At 68. Celsius Kp=9.15×10^-3 for reaction
I2(s)--->I2(g).
What is the equilibrium partial pressure of I2(g) at 68 Celsius.
Do we use I2(s) when calculating?
I thought Kp was equal to PI2(g).

melodyzaki2E
Posts: 61
Joined: Fri Sep 28, 2018 12:18 am

### Re: Partial Pressure

Is the value for Kp given at a different temperature? Maybe use Van't Hoff? Because we don't include solids in our equilibrium constant equations, right?

mahika_nayak_3L
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

### Re: Partial Pressure

The equilibrium partial pressure expression should not include solids, as they do not have a partial pressure. In this case, the partial pressure should be equal to the Kp value because there is no other value in this expression.

Heidi Ibarra Castillo 1D
Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

### Re: Partial Pressure

^ yes solids should not be included

Roberto Gonzalez 1L
Posts: 39
Joined: Fri Sep 28, 2018 12:17 am

### Re: Partial Pressure

Pure solids and liquids should be excluded from the partial pressure equilibrium constant calculations.