New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Chem 330 Week 4 notes

by: Leslie Pike

Chem 330 Week 4 notes Chem 330

Leslie Pike
GPA 3.9

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Gas chromatography
Quantitative Analysis Chemistry
Dr. Darwin Dahl
Class Notes
Chemistry, GC
25 ?




Popular in Quantitative Analysis Chemistry

Popular in Chemistry

This 4 page Class Notes was uploaded by Leslie Pike on Wednesday June 29, 2016. The Class Notes belongs to Chem 330 at Western Kentucky University taught by Dr. Darwin Dahl in Fall 2015. Since its upload, it has received 6 views. For similar materials see Quantitative Analysis Chemistry in Chemistry at Western Kentucky University.


Reviews for Chem 330 Week 4 notes


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 06/29/16
Reference electrodes Standard Hydrogen electrode (SHE) has reduction potential of 0.00V by definition. Pressure is 1 atm and [H+]=1.00. SHE is theoretical, cannot actually be achieved because [H+]=1 cannot be achieved due to activities. A real life SHE must be corrected with the Nernst equation. Example: you have a hydrogen electrode at 720 torr and a pH of 4. What is the potential? The reduction of hydrogen is: 2H+ + 2e- = H . 2 Using Nernst equation: 0 2 E = E – 0.0592/n*log(Q) = 0 – 0.0592/2*log((720/760)/(10^-4) ) = -0.236 V Remember to square the hydrogen concentration. Q expression is products over reactants raised to the balancing coefficients. Galvanic cell problems Calculating Kf for CuY given the following cell (Ka is 10^-7, Ecell = 0.5 V, Esilver = 0.799 V, Eanode = Ecathode – Ecell): Redox titration: Deviations Ecell = Ecathode – Eanode only holds true for ideal circumstances. It can deviate due to liquid junction potential (this deviation can be minimized by choosing an appropriate electrolyte), IR drop (caused by resistance within the battery itself, not present if current is not flowing) and polarization effects. Gas chromatography 2 Number of theoretical plates = 16 (Tr/w) . The more theoretical plates you have, the better peak separation you will have. The Van Deemter equation: H = A + B/μ + Cμ, where μ is the rate of flow of the carrier gas. A stands for eddy diffusion constant. It is caused by the fact that different molecules can take different length paths through the GC column (some might stay by the glass and some might weave through the packing material). It is independent of flow speed. B stands for longitudinal (or axial) diffusion. It is caused when the sample diffuses up or down the column because the carrier gas does not supply enough pressure to keep everything moving forward at the same rate. Decreases with flow rate. C stands for non-equivalency mass transfer. It increases as flow rate increases. A capillary tube does not have packing, and thus A=0. Resolution is therefore much higher.


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Jennifer McGill UCSF Med School

"Selling my MCAT study guides and notes has been a great source of side revenue while I'm in school. Some months I'm making over $500! Plus, it makes me happy knowing that I'm helping future med students with their MCAT."

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.