<p>Wow. Thanks for letting me know that.</p>
<p>“In terms of free response, kinetics is usually a pretty common problem especially in part where you get to choose one of the two problems”</p>
<p>Wait, what? When do you get to choose problems to do?</p>
<p>thats wrong…that was two years ago…since last year its 3 with calc. and 3w/o calc (including eqs) w/ no choice on either</p>
<p>I apparently know absolutely nothing about how the test is going to go tomorrow. I feel more unprepared for this than any other test in my life.</p>
<p>did your teachers not tell you about the changes??</p>
<p>I literally started hearing about these changes 10 minutes ago.</p>
<p>it only changed a little in the free response.
before you got 8 eqs to choose 5
now you get 3 and a question to answer about each
before you got 1 required problem on each section and 2 to choose 1 on each section.
now the problems are shorter but they are all required.</p>
<p>Thanks so much. It does suck about the 3 required equations. My saving grace was being able to skip the problems with chemicals I’d never heard of.</p>
<p>the worst is going to be if one of them is organic because then theyll ask us what type itll be. i was doing a practice today and one of these showed up…the answer was an esertification reaction</p>
<p>At least it’ll save time. If I see any organic chem, I know to just skip it and move on.</p>
<p>thats excatly what my teacher said</p>
<p>I really don’t know much electrochem though either. My moronic teacher taught all of electrochemistry last week, when I was taking AP tests every day.</p>
<p>My teacher predicted that there will be one this year because there hasnt been any electro chem for the past four years.</p>
<p>Am I correct in knowing anode=oxidized and cathode=reduced?</p>
<p>yes that is absolutely true in ALL cases and also electrons flow from anode to the cathode in ALL problems</p>
<p>That’s good at least. Problems like those that have no exceptions are a godsend for AP Chem.</p>
<p>also, if the problem doesn’t state, a best bet is that it’s always left to right (anode to cathode—alphabetical order)… i mean i guess you can find out based on the half-reactions give and their standard reduction potentials… but left to right is also a good indicator (anode –> cathode)</p>
<p>Well, the prefixes should come pretty easily from anion and cation.</p>
<p>Small mnemonic tip for electrochem that my teacher made us think up:</p>
<p>Anode
Negative
Oxidation
d
e</p>
<p>Cathode
Positive
Reduction
is what we need when we’re being killed by the exam.</p>
<p>Sorry, dunno how I deleted that.</p>
<p>And I don’t know what you mean by that. I’m talking about remembering the whole anode = oxidation and negative electrode thing.</p>
<p>Anode != anion.</p>
<p>Expanding on the anode v anion thing, correct me if I’m wrong, but…</p>
<p>If we have Cl2 and Sn, wouldn’t we have:</p>
<p>Reduction: Cl2 + 2e- -> 2Cl-
Oxidation: Sn -> Sn2+ + 2e-</p>
<p>where the oxidation/negative/anode is the cation and the reduction/positive/cathode is the anion?</p>