<p>I did #8 but I can't remember the first half...could you refresh me?</p>
<p>It was about Gibbs Free Energy and thermo/electrochemistry I think.</p>
<p>All the questions are up on AP Central (apcentral.collegeboard.com)</p>
<p>AgNO3 --> Ag+ + NO3-</p>
<ol>
<li>Is delta-G (Gibbs Fr. En.) positive or negative? Explain why.</li>
<li>Is delta-S (Entropy) + or -? Explain</li>
<li>Is delta-H + or -?
Is this consistent with your answers in parts 1 and 2? Explain</li>
</ol>
<p>link to the form A of the ap exam</p>
<p>Hey everyone, I'm really freaking out here. Is there anyone who can tell me what a pro-base is? Please, I really need your help!</p>
<p>No one got #8? I don't believe it.</p>
<p>About the pro-base, are you talking about a Bronsted-Lowry base? Pro(ton acceptor) base?</p>
<p>There was nothing about it being a bronsted, arrhenius, or lewis base. Don't worry about it. :-( :-( :-( It may just be the opposite of pro-acide...and we all know what THAT is. ;-)</p>
<p>Student, I dont think its that nobody got #8 as much as #7 was just ridiculously (really ridiculously) easy and did that.</p>
<p>:)</p>
<p>AgNO3 --> Ag+ + NO3-</p>
<ol>
<li>Is delta-G (Gibbs Fr. En.) positive or negative? Explain why.</li>
<li>Is delta-S (Entropy) + or -? Explain</li>
<li>Is delta-H + or -?</li>
</ol>
<p>Delta S will be positive
Delta H will be postive</p>
<p>Yup. Both + and G - under standard conditions.</p>
<p>Just bumping this up a bit to keep better track of it</p>
<p>i hope everyone did as well as they hoped they would. and craig- i got accepted to ecc for interpretive dance! booyah we'll see more of each now! :-)</p>
<p>this 2004 ap free response question, number 2:</p>
<p>A) determine the empirical formula of a hydrocarbon that contains 85.7% carbon by mass.</p>
<p>I can't figure this out, i know how to get to the answer, Carbon/(Carbon + Hydrogen) x 100...but I can't get 85.7% exact. And i think empirical means it has to be in it's lowest form or something.</p>
<p>can anyone help me out?</p>
<p>what is the kb for HCO2H?</p>