## Kp

BrianaBarr2A
Posts: 22
Joined: Wed Sep 21, 2016 3:00 pm

### Kp

Do we include solids and liquids in Kp? I know we don't in Kc and am confused about Kp so would just like to clarify.

Christian Hardoy 3F
Posts: 41
Joined: Fri Jul 15, 2016 3:00 am

### Re: Kp

Solids and liquids are not included in Kp or Kc, as they do not affect K at equilibrium.

Sedra_Tibi_1L
Posts: 10
Joined: Fri Jul 15, 2016 3:00 am

### Re: Kp

We don't include solids and liquids in both Kc and Kp. We don't include them in any equilibrium constants because solids and liquids don't affect the reaction reaching equilibrium. Equilibrium constants only depend on the gases and aqueous solutions included in the reaction.

Ann Zhang_1M
Posts: 25
Joined: Wed Sep 21, 2016 2:59 pm

### Re: Kp

Kp actually means K, which can be regarded equivalently to Kc.
Pure substances like solids and liquid are not included in the calculation of equilibrium constant, no matter if it's Kp or Kc.

Kaitlin_Ryan_ 3K
Posts: 28
Joined: Fri Jul 15, 2016 3:00 am

### Re: Kp

When calculating Kp, only gases are used.

Solids and liquids are excluded from this calculation.

Catherine_Zhang_1H
Posts: 23
Joined: Fri Jul 22, 2016 3:00 am

### Re: Kp

Do we have to know how to convert between Kp and Kc?

Posts: 4
Joined: Wed Sep 21, 2016 3:00 pm

### Re: Kp

We only include gas in Kp, not liquids and solids, because we are using partial pressures to calculate Kp.

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