converting Kc to Kp

[Parker Smith]

when using the ideal gas equation to convert Kp to Kc, do we need to know the volume, or do we just keep our value in molar and omit knowing the volume?

[Alice Ma 2K]

If you know the molar concentration, you technically do know volume because molar concentration is mol per liter. For example, if there is 0.3 mol/L of a reactant, that means the volume is one liter. Hope that answered your question!

[Sartaj Bal 1J]

For our purpose, we are mainly using the ideal gas equation to convert between concentration and partial pressure for a gas so I don't believe it's necessary to know the volume.

[805097738]

the volume is already included in the concentration as it is moles over volume

[Megan Kirschner]

What exactly is the difference between Kc and Kp? I know (or think) they are equilibria constants but what do they individually represent?

[Lizette Noriega 1H]

What exactly is the difference between Kc and Kp? I know (or think) they are equilibria constants but what do they individually represent?

Kc is used for the concentration of aqueous solutions and gases while Kp is for the partial pressures of gases

[Naren_Ramesh_4F]

When asked the equilibrium constant of a chemical reaction involving gases, do we solve for Kc or Kp?

[Pegah Nasseri 1K]

Kc is calculated using molar concentration while Kp is calculated using partial pressures. To convert from Kc to Kp, use the equation PV=nRT. We know that the molar concentration is calculated by n/V so this equation can be manipulated to find the concentration which is concentration = n/V= P/RT. For gases, use partial pressures to calculate the K constant, unless the question specifically asks you to find Kc. For aqueous solutions, use molar concentrations to find the K constant.

[Kassidy Ford 1I]

When asked the equilibrium constant of a chemical reaction involving gases, do we solve for Kc or Kp?

The question will probably ask what to solve for; either Kc or Kp, because for gases you can solve for either. if they give you partial pressures in the question than solve for Kp and if they give you concentrations than solve for Kc. K is unitless so it shouldn't matter

[Jasmine Kim 1L]

When asked the equilibrium constant of a chemical reaction involving gases, do we solve for Kc or Kp?

If the reaction involves gases, we will most likely be solving for Kp unless the question specifically asks us for Kc, in which case we will need to convert from Kp to Kc.

[Jesse H 2L]

is it better to convert all values of Kc to Kp before continuing to solve a problem (making an ICE table and so on...) using the ideal gas equation, or is it better to do it as the textbook instructs?

[Viviana Velasquez]

When asked the equilibrium constant of a chemical reaction involving gases, do we solve for Kc or Kp?

You would solve for Kp since the P stands for partial pressure. Remember that if they ask for the equilibrium constant of a gas always assume you use Kp unless stated otherwise.

[Naren_Ramesh_4F]

Cool! Thank you so much!

[AniP_2D]

If you know the molar concentration, then you should technically be able to figure out the volume.