I figured out the answers to number 1 a, b, and c. I still haven't figured out d.a) Ka=[H+][C3H5O3-] / [HC3H5O3], Ka= .00014b) pH=2.08c) pH=3.41If you figure out d, let me know c:d) [C3H5O3-]= .0007M
You can find the scoring guide for the AP Calculus tests on the college board website under AP subjects, calculus, sample questions and scoring guides.