ICE Tables:
Equilibrium

Step 5a: If necessary, solve an equation using the variable you introduced in step 3.

In the E row you have expressions involving x that describe the equilibrium concentration of each reactant and product. In the problem, you are given the value of the equilibrium constant for this reaction. The Law of Mass Action tells you how to relate the equilibrium concentrations to the equilibrium constant:

You now have a polynomial equation that you can solve for x. When you have done so, enter that value in the space below and click on the Check button.

Correct!

The correct value of x is 0.00333.