# CHEM 340 HSTC Physical Chemistry for Biochemists Questions

Chemistry 340 Physical Chemistry for Biochemists IFall 2022
HOMEWORK SET No. 10
This homework set is due on Tuesday, November 22, 2022
1. How much work is required to bring two protons from an infinite distance of separation to 0.1 nm?
Calculate the answer in joules using the protonic charge 1.602 × 10−19 C . What is the work in kJ
mol-1 for a mole of proton pairs?
2. A small dry battery of zinc and ammonium chloride weighing 85 g will operate continuously
through a 4-Ω resistance for 450 min before its voltage falls below 0.75 V. The initial voltage is
1.60 V, and the effective voltage over the whole life of the battery is taken to be 1.00 V.
Theoretically, how many kilometers above the earth could this battery be raised by the energy
delivered under these conditions?
3. Calculate the energy in kJ mol−1 required to separate a positive and negative charge from 0.3 nm
to infinity in (a) a vacuum, (b) a solvent of dielectric constant 10, and (c) water at 25 °C, which
has a dielectric constant of approximately 80.
4. The solubility of Ag2CrO4 in water is 8.00 × 10−5 mol kg -1 at 25 °C, and its solubility in 0.04 mol
kg-1 NaN03 is 8.84 × 10−5 mol kg -1 . What is the mean ionic activity coefficient of Ag2CrO4 in 0.04
mol kg-1 NaNO3?
5. Estimate the electromotive force of the cell Zn(s)|ZnCl2(aq,0.02 mol kg-1)|AgCl(s)|Ag(s) at 25 °C
using the Debye-Hückel theory.
6. Design cells without liquid junction that could be used to determine the activity coefficients of
aqueous solutions of (a) NaOH and (b) H2SO4. Give the equations relating electromotive force to
the mean ionic activity coefficient at 25 °C.
7. For the galvanic cell
H 2 (1 bar ) HCl ( ai ) Cl2 ( l bar )
the standard electromotive force at 298.15 K is 1.3604 V and ( ∂E ° / ∂T ) P =
− 1.247 ×10−3 VK −1 .
(a) For the cell reaction, what are the values of ΔrG0, ΔrH°, ΔrS°? (b) For Cl-(ao) what are the
values of ΔrG°, ΔrH°, and S°?
8. Use Appendix C.2 to calculate the standard electrode potential for Cl-lAgCl(s)|Ag at 90 °C if
∆ r Cp° = 0 .

Don't use plagiarized sources. Get Your Custom Essay on
CHEM 340 HSTC Physical Chemistry for Biochemists Questions
Just from \$13/Page
Calculate the price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Writall
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Management
Great service.
Customer 454389, February 15th, 2020
Health Care
I got an A. on this project thanks
Customer 453877, June 6th, 2020
This is exactly what I was looking for and you all helped me out so much! Thank you!!!!!
Customer 454769, June 16th, 2021
Cyber Warfare
Got a 94% thank you!
Customer 452961, August 8th, 2021
Microbology
Thank you for your quick response
Customer 454677, April 26th, 2021
Nursing
Outstanding
Customer 455459, October 8th, 2022
Another great paper thanks for your help!!!
Customer 454811, January 14th, 2022
Health Care
Excellent job
Customer 454677, March 9th, 2021
Criminal Justice
THANK YOU so much I am very pleased with this paper.
Customer 454561, November 1st, 2020
Communications
I got an A. Thanks because I can rely on this excellent work.
Customer 453877, February 17th, 2021
Education
Awesome job!! Thank you!
Customer 455113, July 8th, 2022
Education
I've used this service 3 times and this was by far the best paper I've received. Awesome job by the writer. Thank you for the assistance!
Customer 455113, November 22nd, 2021
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend