CHEMISTRY COMMUNITY

Rhea Kundan_2G

7E says: The molecule 3-chloro-4,4,4-trihydroxy-3-methylbutanenitrile was produced. Draw the lowest energy Newman diagram for this molecule looking down the C2-C3 bond axis. and 7F is almost the same but asks about the second lowest energy conformation. Can someone explain why the lowest energy diag...

Rhea Kundan_2G

I know that the formula \Delta S=nCln\frac{T_{2}}{T_{1}} is given to us on the formula sheet, but would the formula \Delta S=nRln\frac{V_{2}}{V_{1}} also be given to us? Or is this something we need to know/memorize? I'm not sure if I just don't see it on our "Constants and Equations Used in Ch...

Rhea Kundan_2G

On page 100 of the course reader, we are given the example of: CH3CH2CHCH2CH2OCH2CH3 .............. | .............. CH3 and the resulting name is 1-ethoxy-3-methylpentane. I remember in class, Dr. Lavelle mentioned that you pick the longest continuous C-C chain because that usually also has the sub...

Rhea Kundan_2G

honestly I laughed

Rhea Kundan_2G

I love puns

Rhea Kundan_2G

I'm the pessimist

Rhea Kundan_2G

Can someone explain the rules for oxidation numbers/states a little bit more for me? For example, in the course reader we saw MnO_{4}^{-} , and we figure out that the total charge is -1, one O_{4} charge is -2, and the total O_{4} charge is -8 and because of these things the charge for Mn is +7. Wha...

Rhea Kundan_2G

Hi! For a) The cathode half-reaction would be: MnO^{-}_{4}(aq)+ 8H^{+} (aq) + 5e^{-} \rightarrow Mn^{2+}(aq)+ 4H_{2}O (l) and the anode half-reaction would be: 5Fe^{2+} (aq) \rightarrow 5Fe^{3+} (aq)+ 5e^{-} (you can factor out the 5) Adding these two ...

Rhea Kundan_2G

The course reader actually says: 1. ΔG° = -RT ln (K) 2. ΔG = ΔG° + RT ln (Q) The first equation is ΔG°, not ΔG. This makes sense because in the first equation, the system is at equilibrium, so ΔG = 0. Maybe this will help it make more sense: ΔG = ΔG° + RT ln (K) 0 = ΔG° + RT ln (K) - ΔG° = RT ln (K)...

Rhea Kundan_2G

I understand that to find reaction enthalpies using Hess's law or bond enthalpies, the problem you are trying to solve must give you certain information or else you can't use those methods. However, since for standard enthalpy of formation you are just looking at a table to find your information, ca...

CHEMISTRY COMMUNITY

Search found 10 matches

2014 Midterm Q7 E & F

Change in Entropy Formula

Ether Naming

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Oxidation Numbers

Re: Homework Problem 14.17

Re: Confusion about K and Q and Equilibrium

Standard Enthalpy of Formation Clarification