Search found 10 matches

by Katherine Delgadillo 2H
Sun Mar 13, 2016 11:59 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7666
Views: 1036832

Re: Chemistry Jokes

Pre-med life
by Katherine Delgadillo 2H
Sun Mar 13, 2016 11:49 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7666
Views: 1036832

Chemistry Jokes

:-)
by Katherine Delgadillo 2H
Sun Mar 13, 2016 11:16 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Newman Conformation
Replies: 2
Views: 1196

Newman Conformation

For a carbon with two functional groups, what functional group goes on the upper most line in a staggered conformation? Does it matter?
by Katherine Delgadillo 2H
Sun Mar 06, 2016 9:37 pm
Forum: *Complex Reaction Coordinate Diagrams
Topic: Steric Contribution
Replies: 1
Views: 676

Steric Contribution

Can someone explain what steric contribution is and how it affects delta S? The orange book briefly mentions it, so I just want clarification/further explanation. Thanks!
by Katherine Delgadillo 2H
Mon Feb 29, 2016 1:43 am
Forum: *Free Energy of Activation vs Activation Energy
Topic: -ium Page 156 O-Chem book
Replies: 1
Views: 226

-ium Page 156 O-Chem book

Can someone explain when we use the ending -ium? Is it just for atoms with a positive charge? Thanks.
by Katherine Delgadillo 2H
Sun Feb 14, 2016 11:39 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Spectroscopy
Replies: 1
Views: 197

Spectroscopy

Can someone explain what spectroscopy is and how it affects reactions/how it is related to kinetics? The book describes it very vaguely on page 614 of the textbook, but I do not quite understand it. Thanks.
by Katherine Delgadillo 2H
Sun Feb 07, 2016 9:06 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: 2015 Midterm #6
Replies: 1
Views: 310

2015 Midterm #6

Given the following reduction half reactions: I2(s) +2e- --> 2I^-(aq) E°= 0.54 Cl2(g) + 2e- --> 2Cl^-(aq) E°=1.36 The question asks to find E°, ΔG°, and K at 25°C for the following reaction: Cl2(g) + 2NaI(aq) = 2NaCl(aq) + I2(s) After finding that E°=0.82V and ΔG°= -1.6x10^2 KJ, I tried using the eq...
by Katherine Delgadillo 2H
Sun Jan 31, 2016 11:55 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Cp^n and Cr^n
Replies: 2
Views: 273

Cp^n and Cr^n

On page 42 of the course reader, Lavelle shows that (Cp^n/Cr^n) is equal to K in the equation Gp^o-Gr^o= -RTlnK.

What exactly does Cp^n and Cr^n stand for and how would we find/calculate the Cp^n and Cr^n of the reactants and products?
by Katherine Delgadillo 2H
Sun Jan 24, 2016 4:38 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: 8.49
Replies: 2
Views: 338

8.49

Given:
OF2+H20 = O2+2HF ΔH= -318KJ

What is the change in internal energy for the reaction of 1.00 mol of OF2?

I don't understand why Δn=+1mol and how this ends up changing PV=nRT to PΔV=ΔnRT?
by Katherine Delgadillo 2H
Sun Jan 10, 2016 7:30 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Specific Heat Capacity
Replies: 1
Views: 233

Specific Heat Capacity

On page 21 of the course reader, it says that the molar heat capacity of a gas at a constant volume is Cv and the molar heat capacity if a gas at a constant pressure is Cp. Then, HEAT REQUIRED is converted from nCpΔT to J. My question is: Will the constant pressure or volume be given in order to fin...

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