<p>Confirmed - you do not flip the sign when using that equation. The answer is 0.96V</p>
<p>about the ionization energy of fluorine versus xenon...</p>
<p>my teacher said that fluorine had a lower one becuase in ionizing xenon one is breaking up a full octet while in ionizes fluorine one is not. A full octect is more stable than a partially full octet. therefore it takes less energy to pull an electron off of flourine.</p>
<p>personally, i put that xenon had a lower and gave the reasons already mentioned (shielding effect, atomic radius, z effective etc)</p>
<p>seems like the scoring for chem frqs is much less lenient than the scoring for calc ab. :(</p>
<p>Ecell = Ecathode - Eanode</p>
<p>.62 = Ecathode - (-.34)</p>
<p>Ecathode = .28 V</p>
<p>Why are you subtracting -.34? You either keep it as .34 and subtract or you make it -.34 and add.</p>
<p>I can understand why you did that, though. It's a little confusing.</p>
<p>I have also just confirmed that yes, flourine does have a higher first ionization energy than xenon.</p>
<p>damn im getting hammered here</p>
<p>I know, it sucks. I'm still keeping my hopes up for a five, but I can't believe I missed the fact that xenon is not in the same period as fluorine!</p>
<p>Virtuo you do not change the sign it is +0.34 I'm positive. I used this equation in other practice problems. So that means that the answer is 0.96.</p>
<p>
[quote]
I know, it sucks. I'm still keeping my hopes up for a five, but I can't believe I missed the fact that xenon is not in the same period as fluorine!
[/quote]
it is? I said since it xe is a noble gas it has a higher IE <a href="http://boomeria.org/chemlectures/periodictable.jpg%5B/url%5D">http://boomeria.org/chemlectures/periodictable.jpg</a></p>
<p>Hey all,
I think you are right about the EMF value. Using that equation is a little confusing. Oh well, hopefully I still get a five!</p>
<p>
[QUOTE]
it is? I said since it xe is a noble gas it has a higher IE
[/QUOTE]
</p>
<p>No, xenon is in period five. I actually looked it up, and fluorine does have a higher first ionization energy.</p>
<p>well that blows for me</p>
<p>I know, I made the same mistake.</p>
<p>Hm personally, that one was one of the few that i COULD answer perfectly.</p>
<p>Yeah usually radius is the first thing I think of. And the trend that was you go down the periods you decrease IE. BUT, it was kind of mean for them to pick a noble gas, although its in the fifth period. My teacher said they will always ask you something either in the same period or the same group. It they asked F and I or Br, of course I would think only radius. But I guess I got nervous and didn't really think it through, I just thought that a noble gas barely gets ionized.</p>
<p>Yeah, that was kind of an unfair question. :P</p>
<p>I think I got everything right except the cell potential. I can't remember what I put down, but I have the nagging feeling that what I put down was 0.28V.</p>
<p>Looking at it now, the answer is definitely 0.96V.</p>
<p>can someone explain to me how to do 2 e? it was the problem with mgcl2 ...</p>
<p>Can a buffer solution be made from HCl and NaCl? A buffer is formed from a weak acid and the soluble salt of the weak acid, correct? So since, HCl is strong it won't form a buffer with NaCl?</p>
<p>Thanks!</p>