[IDudeScience]

How does one calculate the average equilibrium constant? I have 4 values; 13, 24, 36, and 49. Do I add them all up and divide it by 4 to get the average? Thanks

[renge ishyo]

I believe so.

[cliverlong]

How does one calculate the average equilibrium constant? I have 4 values; 13, 24, 36, and 49. Do I add them all up and divide it by 4 to get the average? Thanks

My instinct asks me to question how can you calculate a meaningful average that is supposed to represent an equilibrium constant when the values you have calculated vary by over 3-fold or over 300% ? Can you repeat any of the experiments to check values? Are you calculating the equilibrium constant using a valid equation? Where do you get your equation for Kc from?

For example if the equation is supposed to be

Kc = [A]/[C]

and you are calculating

Kc = [A]²/[C]

you will get inconsistent answers as you vary concentration of reactant

The following article http://en.wikipedia.org/wiki/Equilibrium_constant uses a different version of the equation to calculate the Kc including wonderful terms such as "activity" and "fugacity"

Clive