<p>@Flying By RICE I’m assuming that’s the equivalent to an ICE table. You’ll get the credit, but it’s a lot easier for the reader to follow your work if you do an ICE table. The higher scoring answers tend to be the ones with the ICE tables on hand. </p>
<p>I can’t see a MC question asking to actually solve using the Arhenius equation (I’d just skip it and move on.) But definitely know what it is dependent on. I’ve seen a couple questions asking a questiok based on dependence and it lists different equations names and theories.</p>
<p>are you taking the test tomorrow NIQuiii? I saw you active on the 2012 thread…</p>
<p>Yes, I’m taking it tomorrow.</p>
<p>Did you take it last year?..not to be prying…</p>
<p>What’s the Arrhenius equation?</p>
<p>Lol No, I didn’t. What 2012 thread are you talking about? Do you mean the study thread?</p>
<p>It’s an equation that tells you the K at a certain temperature. It relates the Kb, temperature, and Activation energy or the Activation Energy with the temperature and gas constant.</p>
<p>Are you freaking kidding me? We never learned this equation either! I am so done with my chemistry teacher.</p>
<p>Its not that important… I have done all the past free response questions and it has never come up…</p>
<p>It’s okay lemon 
The Arhenius equation isn’t a heavily used equation.</p>
<p>I mean, I know it’s not going to be on the free response, but I just wish I had learned it before… It might have helped out on a couple multiple choice.</p>
<p>Did anyone’s teachers make any guesses?</p>
<p>Please go through the thread. People have asked that question multiple times before and others have supplied answers already. This thread also has more predictions.
<a href=“http://talk.collegeconfidential.com/ap-tests-preparation/1376986-official-ap-chemistry-2013-thread-12.html[/url]”>http://talk.collegeconfidential.com/ap-tests-preparation/1376986-official-ap-chemistry-2013-thread-12.html</a>
Which, apparently, you commented on as well.</p>
<p>this might sound stupid but can somebody help clarify this question? </p>
<p>In which of the following processes are covalent bonds broken?
a. solid silver melts (metallic bonding so no)
b. solid potassium chloride melts (ionic so no)
c. solid carbon (Graphite) sublimes (network covalent? so is this it?)
d. solid iodine sublimes (covalent?)
e. glucose dissolves in water (not exactly breaking bonds so no?)</p>
<p>i don’t have the answer key unfortunately & i’m stuck. :/</p>
<p>graphite is the answer.</p>
<p>Graphite is the only one which exists as a covalent crystal. Iodine is a molecular crystal with London Dispersion IMF’s only. The others are way off.</p>
<p>^^and lemon…that is a link to THIS thread:)</p>
<p>Are we expected to know all of the bond angles for the VSEPR theory? I’ve yet to come across one in the 2 audit multiple choice exams my teacher gave, or a free response question.</p>
<p>I was told that we’ll need to memorize the angles for every structure, but the only angles we need to know are 90, 120, 180, and 109.5. We’ll also need to know for each structure if the angles will be slightly less than the angles. (Ex: Ammonia has a 107.8 bonds angle due to an unshared pair on the central atom).</p>
<p>I saw a multiple choice question on an old exam asking about how many planes were in a structure. Can someone explain how I know from the VSEPR model/molecular geometry the number of planes present?</p>
<p>guys relax…if you can do equilibrium and stoich, and titrations, you pass this test.</p>
<p>2012 question 2 part b&c, someone wanna explain? Not sure what the scoring guidelines did.</p>