2010 AP Chemistry Free Response Discussion

Test Preparation AP Test Preparation
221

<p>Did any of you guys take the late test like me. If you did what did you think??</p>

222

<p>This reaction below is tenth order:

[Biophysical</a> Journal - Sickle hemoglobin gelation. Reaction order and critical nucleus size](<a href=“http://www.cell.com/biophysj/abstract/S0006-3495(78)85438-1]Biophysical”>http://www.cell.com/biophysj/abstract/S0006-3495(78)85438-1)</p>

<p>Any order reaction is <em>possible</em>, it’s just that the reaction become exponentially less likely for increase in order.</p>

223

<p>No! haha at the equivalence point…the concentrations aren’t equal…you’ve added the same stoichiometric amount of each…which doesn’t mean the same concentration
I’m still saying it’s blue hahaha
I’m likely wrong…but I really don’t care lmao I think it’s blue :D</p>

224

<p>Yeah, at equivalence point it is equal. When you go past it, you add acid. That makes the solution acidic. Just because you go past the equivalence point doesn’t mean the solution is basic; the reverse also happens. The question is intended to test one’s understanding of equivalence point, not just if one has memorized what a solution typically is after going past the equivalence point.</p>

225

<p>that’s wrong though lol
at equivalence point: you have equal amounts of both…meaning it would be a basic solution at equivalence point lol
I think I might have missed it for a different reason…not that haha</p>

226

<p>DillonJay: Please stop being ignorant.</p>

<p>Here’s a graph to prove that you are wrong: <a href=“http://image.tutorvista.com/content/ionic-equilibrium/titration-curve-strong-acid-base.gif[/url]”>http://image.tutorvista.com/content/ionic-equilibrium/titration-curve-strong-acid-base.gif&lt;/a&gt;&lt;/p&gt;

<p>Look at the second one, this is a strong base being titrated with a strong acid. The pH is always 7 at the equivalence point. As you go past that point, the pH becomes more acidic.</p>

227

<p>Honestly DillonJay you do not understand this concept at all. You probably are just saying what you are used too, which is a weak acid being titrated with a strong base, not a strong base being titrated with a strong acid.</p>

<p>

How in the world did you go from the first part of this quote to the second, mildly idiotic second statement? I see no logic here.</p>

<p>Are you ■■■■■■■■? Because I really hope you aren’t this dumb (at least in chemistry) DillonJay.</p>

228

<p>screw all of yall then hahaha
have fun with you’re 5’s
how dare you call me ignorant
suck it!</p>

229

<p>like I said…I missed it because I didn’t realize which one was being titrated with which…
not because of what y’all are saying
I don’t even care anymore hahaha
you’re right…I’m wrong
DONE</p>