AP Chemistry 2010 Study thread! Come on people!

Test Preparation AP Test Preparation
501

<p>Wait,</p>

<p>Does someone have the answers to the 2008 normal exam?</p>

502

<p>@apscared</p>

<p>It’ll probably give you a 4, but not definitely, especially if you screw up majorly on FRQ, but you still could miss a bunch.</p>

503

<p>How are we calculating the electrons transferred in the reaction? Are we looking at how oxidation states change? Could someone break down the problem for me? Thank you so much.</p>

504

<p>Hey guys on the 2002 M/C question 12, how do you know it is a complex reaction?</p>

505

<p>oh yea…can somebody explain numbers 5 and 6 on the titration for the 2008 exam please?</p>

506

<p>and thanks for the replies everyone :]</p>

507

<p>lemone, any chance you’re willing to type that question up? I don’t have that in front of me, curious though.</p>

508

<p>Are there any specific formulas or constants that we need to memorize tonight or will they be given to us?</p>

509

<p>CranberryOrange- but why wouldn’t the other ones like solid melting work also break covalent bonds though?</p>

<p>and please does someone have their 2008 exam questions with them? This will be a great review for u too!</p>

510

<p><a href=“http://www.griffithchem.com/AP/AP%20Test%20Solutions/AP%202002%20Multiple%20Choice%20Exam%20Answers.pdf[/url]”>http://www.griffithchem.com/AP/AP%20Test%20Solutions/AP%202002%20Multiple%20Choice%20Exam%20Answers.pdf&lt;/a&gt;&lt;/p&gt;

<p>Here is the link</p>

511

<p>You have to be able to recognize coordination complexes.</p>

512

<p>lemone,do you have a link like that for the 2008 exam (w/ handwritten work on it) because i don’t think anybody has it here…</p>

513

<p>Yes, but how? I usually recognize them by looking at those lol</p>

514

<p>@Sporty, <a href=“http://www.griffithchem.com/AP/AP%20Test%20Solutions/2008%20AP%20MC%20Answers.pdf[/url]”>http://www.griffithchem.com/AP/AP%20Test%20Solutions/2008%20AP%20MC%20Answers.pdf&lt;/a&gt;&lt;/p&gt;

515

<p>sporty04:
It’s a matter of recognizing that carbon (graphite) is a molecular solid. The others are metallic, ionic, and molecular.
lemone:
Not entirely sure, other than that it stands out to me compared to the other choices…</p>

516

<p>Rather large question, but can anyone answer, say, the first 3 parts of this question?</p>

<p><a href=“College Board - SAT, AP, College Search and Admission Tools”>College Board - SAT, AP, College Search and Admission Tools;

<p>Question 3</p>

<p>I really don’t get electrochemistry :x</p>

517

<p>Okay, fellow AP Chemists…I’m off to bed, and I suggest you East Coasters make your way there, too.</p>

<p>Good luck everyone! Don’t stress!</p>

518

<p>heinochus:
Since O2 bubbles are being produced, the reverse reaction for the O2 reduction is occurring. In other words, water is being oxidized. This provides electrons, which travel via the external circuit over to the electrode where copper is being plated. In order for copper to be reduced, it requires the input of electrons. Hence the flow from right to left in the diagram.
For part b, as I mentioned the reverse reaction of the oxygen reduction is occurring. Then, since the copper reduction involves 2 e- while the oxygen reaction involves 4 e-, you need to multiply the coefficients in the copper reaction by 2 (balance charge). Then add the 2 reactions. (reverse of first reaction plus second reaction x2)
As for c, the mention of the power SUPPLY means that the overall reaction requires an input of voltage in order to occur. On its own, the reaction from part b is NONspontaneous. Since ^G is negative for spontaneous reactions, it is predicted to be positive in this case.</p>

519

<p>in terms of reaction kinetics, zero order is faster than 2nd order right? </p>

<p>and i am cramming. i will cram like a maniac today, i have never been more inspired to cram …</p>

520

<p>thanks lemone! really appreciate it :slight_smile: this is the last time but could you also give the links for the 2001 and 2002 exams (I’m not sure which exam i have----the first question is to write the chemica lcompound for "commonly used as a disinfectant for minor skin wounds) </p>

<p>for anyone- is this the order of increasing intermolecular strength: London disperson forces, dipole-dipole attractions, ionic, hydrogen, and then network solid? </p>

<p>also does anybody have any idea how to do question number 3e ii. in the 2009 FRQ on collegeboard?</p>