<p>Its been 48 hours... even for those on the west coast
DISCUSS!!!</p>
<p>CB didn't put it up yet though... arrgh so slow</p>
<p>when can we talk about it</p>
<p>Now. It's been 48 hours.</p>
<p>You use the buffer equation for the last part of number one, right?</p>
<p>Are we allowed to say the answer now? It's still not on CB yet...
I didn't use the buffer equation... just the CB way, which I suppose simplifies to the buffer equation.</p>
<p>i didn't use the buffer equation... u mean the henderson-hasselback or smth?
what did u get for the final pH?</p>
<p>i guess itll be easier to talk about it when CB posts it up so we can see the actual question lol</p>
<p>I did it the buffer way, then I went back at the very end and did it the other way and got the same answer so it def works</p>
<p>For #2 the gibbs free energy one
What did u guys get for part b where it said you have to find the temperature when K(eq) = 1</p>
<p>Wouldn't that become 0 because when you put it into the equation its like RTlnK????</p>
<p>lol yea I missed that question too.
You just calculate H = TS</p>
<p>omg!!! none of that K formula? -___-</p>
<p>The chem is up on collegeboard.</p>
<p>You had to use the G = H - TS (hehe sorry I can't make the triangles but I"m sure you know what I'm talking about) and set G equal to 0. </p>
<p>The equations were crazy easy but I realized I messed the last one up because I forgot it said you had to start with a zinc ion and I started with solid zinc. Stuuuuupid!</p>
<p>For number one I think I got my pH to be like 12 something but I definitely messed up parts C, D, and E of that question, so I'm probably pretty off.</p>
<p>ahah damn I got that wrong too I put T cannot be determined because I thought you had to use the value of G from the previous part... **** I screwed this **** up ****</p>
<p>Ok...Are these statements correct</p>
<h1>1</h1>
<p>pH = about 3.3? maybe a but more</p>
<h1>3</h1>
<p>The electrons flow counterclockwise.
delta G > 0</p>
<h1>5</h1>
<p>Fe2+ </p>
<p>moles = 5 x MV</p>
<h1>6</h1>
<p>So2 resonates
ratio increases with a temp increase
pressures arent changed by a catalyst</p>
<p>and I didnt know how to do the next part, c, either</p>
<p>they're up!!! aah! lol</p>
<p>for the lab question i got</p>
<p>5MV
5(55.85)MV
(5(55.85)MV)/g</p>
<p>is SO2 a resonance? i would think its sulfur in the middle, double bond oxygen on each side, and a lone pair on the sulfur, and each oxygen with 2 lone pairs</p>
<p>Ohhh nice I got some questions right!!!! Yayyy I'm proud of myself ha ha ha.</p>
<p>Ahhh **** I messed up the SO2 diagram and I also messed the lab question up. Oh well.</p>