<p>yeah i noticed that too....kind of interesting, it was a weird test.</p>
<p>im going to stop worrying about my score and move on with life hopefully.</p>
<p>the exam was kind of easy in the multiple choice, but more difficult in the free response</p>
<p>zspot9~ There was a bit on acid/base. Hint~ the lab question</p>
<p>not only that, but there was some questions on nuclear chemistry i.e. the multiple choice--our class never went over nuclear chemistry</p>
<p>i don't think i got the whole point of question 6, and not all of question 1. however i know i did reasonably well on at least 3 on the free responses..i'm hopin for a 4 but a 5 seems unlikely</p>
<p>hey, tell me something, what is the basics to nuclear chemistry--notes would be helpful!! :)</p>
<p>oh, one more thing...</p>
<p>how much on the free response did u all get?...</p>
<p>i found it very easy in #4</p>
<p>I have no clue about nuclear chemistry. There are alpha particles and beta particles. That's all I know. We only had a crash course in nuclear chemistry the yesterday and I didn't really pay attention. I think we had one question on the M/C about it. I ommitted it and when I quickly glanced at #8, I though it was a nuclear chem problem so didn't attempt it.</p>
<p>yeah ap equations i thought wasn't that bad..the only one i'm not too sure about is this one with chlorides..but i'm sure i got it right cuz i did evolution of gases or something</p>
<p>i probably got a 3 or a 4</p>
<p>The lab question was only Acid/Base insofar as it mentioned pH and it asked why one salt affected pH.</p>
<p>A real Acid/Base question would involve calculating Ka/Kb, determining pH of solutions after change in concentrations, determining pH of buffers, creating buffers, drawing a titration curve, etc. There was a whole branch of knowledge that this exam simply did not evaluate, knowledge that I was under the impression was requisite to completion of an AP level chemistry course. That's all.</p>
<p>MC: it was okay, slightly easy, I think I got 80% of them right, i left 6 blank.</p>
<p>Free Resposne: Reactions were easy, #1, #3, #7 were all easy, i think I got 100% on that. #5 and #6 were slightly hard, probably got half credit.</p>
<p>Any ideas on my score?</p>
<p>I almost missed a titration MC...it was the titration of a base by an acid (c'mon, how often do you do this?), so you had to start w/ a basic (>7) pH....just kinda woke me up I guess.</p>
<p>jason: if I had to guess and you assumptions are correct, I'd say 5...but who knows with this year's curve.</p>
<p>eh, the best thing to do is not worry about it until mid-July :).</p>
<p>i have a question...
100 ml of .2 M acetic acid (Ka= 1.8x10^-5) is titrated with .1 M KOH. Calculate the pH if the following volumes of KOH are added:</p>
<p>a) 20 ml
b) 40 ml</p>