Practice Exam 1 - HOUR EXAM 1 Chemistry 030.102 Section 1...

This preview shows page 1 - 4 out of 10 pages.

The preview shows page 2 - 4 out of 10 pages.
Page 1 of 10HOUR EXAM 1NAME (Print clearly)______________________________Chemistry 030.102Last name, first name middle initialSection 1 – Prof. DagdigianFebruary 22, 2013jhed ID__________________Calculators allowed, but do not use programmable features.One sheet of 8½×11 in. paper with notes may be brought into the exam.Miscellaneous information:R= 8.31 J mol–1K–1T(K) =T(C) + 273Units:1 J = 1 V-C1 A = 1 C/secFaraday's constantF= 96485 C mol–1welec= –QΔEwelec,max=ΔGΔG°= –nFΔE°ΔE°=E°(cathode) –E°(anode)Nernst equation:ΔE=ΔE°– (RT/nF) lnQ=ΔE°– (0.0592 V/n) logQat 25°CEquilibirum constant:ΔE°= (RT/nF) lnK= (0.0592 V/n) logKFirst-order kinetics:c=c0ektSecond-order kinetics:1/c= 1/c0+ 2ktActivation energy:k=AeEa/RTpH = –log[H3O+]Equilibrium constant of water at 25°C:K= [H3O+][OH] = 10–14mol2L–2You may use the space below or on page 9 for calculations, etc.
We have textbook solutions for you!
/Introduction-to-General-Organic-and-Biochemistry-11th-Edition-9781285869759-626/
The document you are viewing contains questions related to this textbook.
Chapter 8 / Exercise 8-104
Introduction to General, Organic and Biochemistry
Brown
Expert Verified
Name_________________________________Page 2 of 101.Galvanic cellsThe following standard reduction potentials are available:Au3+(aq) + 3 eAu(s)E°= +1.498 VZn2+(aq) + 2 eZn(s)E°= –0.762 VConsider an galvanic cell consisting of a zinc (Zn) electrode immersed a solution Zn(NO3)2and agold (Au) electrode immersed in a solution containing Au(NO3)3, connected with a salt bridgeCompute the standard potential difference for this cell.(a)Compute the standard potential difference for this galvanic cell.ΔE°= ______________________ V(b) Write a balanced equation describing the reaction occurring in this cell.(c)Compute the change in mass of the gold electrode after a current of 1.90 A flows through thecell for 30.0 minutes.The atomic weight of gold is 197.0 g mol–1.Change in Au mass = ______________________ gPart and max points(a) 5(b) 5(c) 5Total (15)Your score
Name_________________________________Page 3 of 10

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 10 pages?

Upload your study docs or become a

Course Hero member to access this document

We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Introduction to General, Organic and Biochemistry
The document you are viewing contains questions related to this textbook.
Chapter 8 / Exercise 8-104
Introduction to General, Organic and Biochemistry
Brown
Expert Verified

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture