<p>always equilibrium and lab question. </p>
<p>i’m gonna say some sort of funky kinetics problem on there (which i’m studying) and maybe a bonding related problem? but of course, i can’t read ap centrals brain so … oh well. </p>
<p>but does anybody think Princeton Review is good? is the multiple choice too easy or too hard compared to the AP test?</p>
<p>to cadillac’s comment:</p>
<p>it’s probably bcuz it is one of the hardest to teach. the subject is so comprehensive that it just makes it nearly impossible to teach. my teacher was telling us how some of us have grasped some chemistry concepts better than he has and just some of the stuff he actually needs to review before teaching us. it is tough to teach AP Chemistry…</p>
<p>Bio is freaking memorization so all the Bio folks need to suck feet. Chem is much less actual memorization and more applying the equations. </p>
<p>Ignore that suck feet comment, btw. I just found out my stupid partner died and didn’t do work for this project I’m working on right now. WHY THE HELL do teachers give projects during AP WEEK? Eff my life. I was supposed to be asleep 3 hours ago. So much for getting 9+ hours of sleep.</p>
<p>bottom line. i basically studied my ass off and got a 3 last year.
the end.</p>
<p>^ Great comment; thanks for the encouragement.</p>
<p>guys start posting questions, frqs and general reviewing</p>
<p>If the subject is so comprehensive, then the curve should be lower like EnSci (55.8%?!)</p>
<p>I’m thinking of bonding too, specifically isomers and perhaps IMF, since that has been pretty frequent. Lewis dot diagrams I think will come back this year too.</p>
<p>What kind of equilibrium problems, guys? Last year was Ka, the year before was Ksp. Any guesses, like Kp/Kc?</p>
<p>^^ Here you go: Calculate the [H+] of 0.01 M solution of a weak acid that has a Ka = 2.1 x 10^-10.</p>
<p>Okay, here are my guesses(hopes?) for the FRQ (not in any specific order other than 1 and 4):
<p>Feed, you’re amazing! You deserve an internet hug! I agree with your predictions. </p>
<p>That’s actually really weird, my final exam was in that order…</p>
<p>I find it incredible that last year, they had no lab question. They had IMF/bonding forces and lewis structures/isomers instead, which are usually combined in one question…</p>
<p>:) No probs… let’s hope my predictions are true.</p>
<p>Btw, there was a lab question last year.
It was question 2. Related to Hydrated salt, and gravimetric analysis. You can find the question here: <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;
Page 8.</p>
<p>And I have no idea what the hell gravimetric analysis is.</p>
<p>Oh, and am I the only one who finds it ridiculous that they can’t even provide us with the periodic table as a separate sheet of paper? They provide it in landscape format as part of the booklet … and we can’t even tear it off. Basically we have to keep flipping back throughout the test and either tilting our heads and increasing our probability of getting neck cramps or turning the entire booklet on our desk to look at the damned periodic table correctly. What a pain in the butt. I wrote to the College Board asking them to at least provide us with a separate sheet of paper… or let us tear out the periodic table but all they did was email me saying that my comments are vital… Idiots.</p>
<p>
I understand how to do equilibrium (sort of like LeChat with numbers), so it isn’t the math that is the problem. I just don’t know what numbers to use before this in in buffer and weak acid or weak base problems, like what to subtract from what, etc.</p>
<p>Looking at my Kaplan, there are 5 main types of lab problems:</p>
<p>1)Measuring Liquids and Solids
2)Titration
3)Use of a Spectrophotometer
4)Gravimetric Analysis (Evaluation of a Hydrate)
5)Molar Mass from Vapor Pressure)</p>
<p>Since 4 was used last year, I wonder what they have left to revolve through…</p>
<p>Lol 3 sounds like a joke. Basically you use Beer’s Law for that. (A = abc <– easiest equation on the planet).
I hope it’s 3.</p>
<p>Edit:
Okay, I checked lab questions for the last couple years:
2008 - Gravimetric Analysis.
2007 - Titration
2006 - Beer’s Law - Spectrophotometer
2005 - Synthesis of a Salt
2004 - Kinetics - included Beer’s Law
2003 - Dilution - included Beer’s Law
2002 - Neutralization</p>
<p>Guess it won’t be Beer’s Law this year.
Okay, now I think Lab will be on gases or calorimetry.</p>
<p>My predictions (detailing Feed’s)</p>
<ol>
<li>Equilibrium - probably Ka/Kb or Ksp - last year it was Kc and Kp and the year before that it was titration and Ksp - they don’t have much choice - they have to alternate.</li>
<li>Thermodynamics - delta G… easy crap.</li>
<li>Electrochemistry - probably applying Nersnt equation.</li>
<li>Net Ionic equations.</li>
<li>Titration Lab - last year was gravimetric analysis, year before was liquid solids, years before that was a crazy spectrophotometer question…</li>
<li>Periodicity/Lewis structure/Hybridization.</li>
</ol>
<p>I would also add bonding forces/IMF forces to that, since AP LOOOOVES that.</p>
<p>^ Oh damn it… I forgot there are 2 forms for each year.</p>
<p>Good luck, all! The last time I took AP Chem was the fall semester-- our school is on the block schedule. Beautiful if you want to take tons of hard classes, terrible if you actually want to take the corresponding AP tests. I have hardly studied at all, but I love chem and I’m gonna do the test just to see what score I get! </p>
<p>It’s great to see that there are about a zillion other kids worried about the same things I am this week…</p>
<p>Gases or calorimetry are fair guesses though.</p>
<p>“Molar Mass from VApor Pressure” relies on interpreting PV = nRT, but what specifically is a calorimetry lab?</p>
<p>I dunno exactly, but probably something involving q=-q, and figuring out the molar heat capacity maybe. But this might be far fetched since I don’t think calorimetry really has shown up on past papers. I’d place my bet on Gases.</p>
<p>Alright, I’m out for the night.
Have fun, all.</p>
<p>Come ooooon people, we need more posters here D:</p>
<p><a href=“College Board - SAT, AP, College Search and Admission Tools”>College Board - SAT, AP, College Search and Admission Tools;
<p>Everyone try 2b! It’s an electrochemistry problem, which AP notoriously tries to put on the test, since it’s usually the last chapter that people complete in the book.</p>
<p>In what format will the lab question be asked?</p>