<p>Will questions about Ksp or Ka require you to use variables to solve for something? </p>
<p>For example, one Barrons problem required you to set up this equation:
Keq = ((2x)^2)/((3 -x)(3 - x)) = 45.9</p>
<p>This equation was made based on the information from the problem. But aren't these more AP level? It's not the math I'm worried about. I just haven't taken AP Chem yet, and I'm hoping equilibrium constant problems aren't too tough</p>
<p>I saw that in AP Chem videos (from the AP Chem CTY course I’m enrolled in), and “ICE” wasn’t in the Barrons SAT II book, so I’m pretty sure it’s not on the SAT II.</p>