<p>Let's get some solutions going!</p>
<p>I’ll start with some of the non-calculator ones. Some of these are abbreviated solutions. Please correct me if I messed up anywhere.</p>
<p>4.
a)
i) H+ + OH- -> H2O
ii) The solution would be yellow</p>
<p>b)
i) C3H8 + 5O2 -> 3CO2 + 4H2O
ii) Acidic - the product is H2CO3</p>
<p>c)
i) 2H2O2 -> 2H2O + O2
ii) -1</p>
<p>5.
a) H-C=-C-H (that’s a triple bond lol)
b) Ethyne. The triple carbon-to-carbon bond is shorter than a double or single bond.
c)
i) Trigonal Planar
ii) Tetrahedral
d) True. Energy is required to break intermolecular forces.
e) Ethane. C-H bond is not polar and the molecule is symmetrical.
f) I wrote a lot for this, but basically Ethanol can hydrogen bond and Ethanethiol cannot.</p>
<ol>
<li>
a) 1s2 2s2 2p6 3s2 3p6 3d10 (I wonder if 1s2 2s2 2p6 3s2 3p6 4s2 3d8 works?)
b) Zn, the electrons are held closer together due to higher effective nuclear charge.
c) Al
d) NO3- moves into the salt bridge.
e) .90
f) Negative
g) Decrease due to decrease in [NO3-] which keeps the cell operating.</li>
</ol>
<p>4b. ii. I wrote carbonic acid? – but i think you are correct</p>
<p>5d. FALSE because boiling liquid ethanol does not molecular bonds, it only breaks the intermolecular attractions between individual liquid ethanol molecules. </p>
<p>6b. Wouldnt it be Zn^2+ since ionization energy for metal cation would be significantly higher compared to the Zn. Imagine ripping an electron away from a positively charged ion. The effective nuclear charge is higher in Zn2+ no?</p>
<p>Anyone know how many points each question is? I know the percentage of each of the total, but raw pt values?</p>
<p>for 6g i said increase becuase if you use the formula E=Ecell -rt ln(Q), you see that the E inceases</p>
<p>^wrote same thing as omgpie911; f is negative due to the formula that relates dG to E</p>
<p>5b. Ethyne; triple bonds have higher charge density so two nucleus are closer together – something along those lines</p>
<p>^^ that’s exactly what I was thinking for 6b!!!
That’s basically what I put as my answer too lol</p>
<p>5d. You’re right. Oops.</p>
<p>6b. I’m not sure. Your logic sounds correct, however.</p>
<p>it is increases for 6g and on 5d it is false because you are breaking INTERmolecular forces not INTRAmolecular forces like it claimed.</p>
<p>Hopefully the ones I got wrong are only worth a point each. :p</p>
<p>Ok, I was confused on the last question on 2 and 3 which is frustrating because I was 99% confident on everything else before that.</p>
<p>Wait…why is 4a going to be blue??? I thought since the base was more concentrated…it would end up being basic after the equivalence point
crap haha I guess I could have missed that point lol</p>
<p>oh yea 6g. INCREASE – got that also : )</p>
<p>@aGGieENGiNeeR
the answer for that question is false because the question is saying is it breaking intramolecular bonds. Which is incorrect because when boiling intermolecular forces are broken</p>
<p>6b, I was thinking the electronegativity…the “bond” between the nucleus and it’s electrons is STRONGER as you proceed to the right and sincet Zn has more electrons…it would be harder to pull them away
wait…maybe I DID put Zn hahaha but just justified it differently lol
I HOPE I did anyway</p>
<p>^ Ok NEVERMIND hahahaha 6b is correct 
I DID put Zn…I remember now I just looked at a periodic table lol
that SCARED me for a second there</p>
<p>oh right yeah thats what I meant to say lol.</p>
<p>I specifically remember going back and saying Zn2+ has the same electron configuration as Ni…so Zn had more electrons…higher electronegativity…and higher ionization energy therefore lol</p>
<p>So you agree that the answer was Zn and not Zn2+, correct?</p>
<p>yes I do haha
That’s right myyy bad lol</p>