How do I calculate percent error for this equilibirum lab?

Question

The lab purpose is to determine the equilibrium constant (Kc) of the reaction of acetic acid and ethanol.

At the end, we found Kc to be 1.046.

Since this is the experimental value, how do I find the expected value so that I can calculate the % error?

And what does this value of K = 1.046 mean?

Thank you so much in advance.

Answer 1

You can probably find the known Kc value for this reaction and your temperature published somewhere in your book. An equilibrium constant (K)  greater than one means  there is a higher concentration of products than reactants at equilibrium. An equilibrium constant (K) less than one means there  is a higher concentration of reactants than products at equilibrium.