Ap chemistry post test discussion [2011]

<p>I didn’t think the MC was that bad, but it covered the material that I practically didn’t even review. The FRQ #1 was actually the easiest for me for some reason while the others were more difficult. Because they stopped removing a quarter of a point for questions answered wrong, the test was made significantly more difficult. Also, because of this, the curve will be higher to our advantage. I hope you all did well!</p>

<p>What order was the FRQ question, zero, one, or two?</p>

<p>Anyone know the policy on releasing the FRQ grading rubric? I would think that since they release the FRQ’s 48 hours after the test that they might as well release the answers along with them…</p>

<p>0 </p>

<p>sdfpsdfsfsdfsdf</p>

<p>POOP!!!</p>

<p>I wish it was 1st order :'(</p>

<p>It was obviously 0. That was like the easiest FRQ on the entire test.</p>

<p>@ RussianScience - I’m sorry, but I actually loled at that… that sucks.
But the other two were quite easy.</p>

<p>My teacher never went over what to do with the graphs, only when we are given a pretty table :'(</p>

<p>@ Russianscience</p>

<p>thats like my friend, he finished part 1 and then when they said 20 minutes left he did not realize there was a part 2 and wondered how so much time was left.</p>

<p>TIME KILLED ME. I could have gotten a 5 with more time, GRR. I didn’t feel like doing a timed practice test (mc+frq), so I had no idea how to pace myself.</p>

<p>DAMN it was zero?!</p>

<p>Ugh…what the hell…I need a 4 on this and my hopes of that are diminishing exponentially =((((((</p>

<p>And why the hell was this AP exam so much more difficult than previous years? It was unprecedentedly more difficult than any practice exam I looked at. This wasn’t even difficult-hard; it was raped-hard…-_-</p>

<p>When we see the exam tomorrow I think it will be known that it wasn’t really all that bad and probably actually easier than last year. I worked a hundred plus equilibrium problems of all types (Kp/Kc/Ka/Kb) and I know that question 1 (FRQ) has to be an equilibrium… but never saw one with quite that approach before.
Best way to disguise a Ka/Kb is by throwing some strong acid on the front… make it so easy that anyone used to typical AP Chem questions freaks out… worked pretty well.
I was totally ready for some hard core math but was thrown off a little by the lack of obvious “types” of questions. Guess the writers are trying to get creative. Kinetics can only be 0/1/2 for us so when it’s not 1/2 i guess that makes it 0. Hope everybody gets a good grade- I think i made a 6.</p>

<p>2011 FRQ is up, so we may now talk about it. I’ll post my solutions after calc BC.</p>

<p><a href=“Supporting Students from Day One to Exam Day – AP Central | College Board”>Supporting Students from Day One to Exam Day – AP Central | College Board;
<a href=“Supporting Students from Day One to Exam Day – AP Central | College Board”>Supporting Students from Day One to Exam Day – AP Central | College Board;

<p>I did pretty good, MC was good, part a was good, part b was ok.</p>

<p>@monarchry</p>

<p>Damn, did he find out about part 2 when there were 20 minutes left or did he not know about it until the test was over?</p>

<p>What did you guys put for 1. d) i). NH3 and NH4 create a buffer which shouldn’t undergo large changes in pH, but HCl is a very strong acid so I’m not sure…</p>

<p>You guys are all on crack!! The free response was so much easier than the mult choice. The mult choice felt so out of context with everything we had done in class!! There was so much trivial stuff that didn’t seem to matter. Not as many calculations as I was expecting, considering how much of our class was calculations.</p>

<p>I wrote that it’s a good buffer because they’re a strong base/weak acid combination.
Or strong acid and weak base . . . I don’t remember what I wrote, because I don’t know which it is! </p>

<p>What was the second equation writing one?!
What was the Lewis Base?
Also for the third one;
I explained it by saying it would change colours (from colourless to blue). . . ?</p>

<p>For the third one, I wrote that a solid silver precipitate would form.</p>

<p>Oh darn.</p>

<p>For the electron dot diagram did you guys only have single bonds?</p>

<p>And what’s 6.b)? I could only think of one.
For 6.d) I think I did 2(40.0) = 80?</p>

<p>Unfortunately, I made the mistake of writing N2H4 as a triple bond and not a single bond.</p>

<p>6.b I wrote that it was because the average kinetic energy went up and that, since volume would stay the same, temperature increased with pressure.</p>

<p>6.d I completely skipped… :(</p>