What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M ?

Question

Kc=[C][D][A][B]=2.6

Answer 1

Are you sure you're not missing anything in this equation? Equilibrium constant is expressed as a ration of products over starting materials. I think you meant K_c = [C][D]/[A][B] = 2.6. If that's the case, you'll just need to set up and equation, where X will be the amount of material used/made. Since orders of the reaction are 1, 1, 1, 1 for each component, you'll end up with the equation that looks like:

 

2.6 = X² / (1-X)(2-X), which by solving for X would give you the missing concentration of the component [D]