<p>What kinds of problems can go on #1 free response. I know acid/base, and constant from partial pressures. What kinds of solubility problems are possible and/or likely based on the exams of past years?</p>
<p>also, in relation to equilibriums, will all ap chem solubilities follow the "5%" rule so that we dont have to check for it? will we have to bust out the quadratic formula to solve them?</p>