mccord ch305

exam 2

10/16



Exam 2

Wednesday 10/16
3-3:50pm
UTC 2.102A


What we provide on Exams We will provide all students with:

  • the Exam
    • cover page with periodic table and all necessary conversion factors and constants
    • actual exam - 20 multiple choice questions
  • an answer sheet - aka: bubblesheet

The cover page with the periodic table will be very similar to the one available in the Appendix of the ChemBook website (Chapter 10).

Coverage: Exam 2 covers all the material that was covered on HW's 03 and 04. ChemBook Chapters: The exam covers all of Chapter 7 which is the chapter on electrochemistry.

Questions: The exam will have somewhere around 20 to 25 multiple choice questions. This means that each question is worth 5 points. We might decide to push that ±1 point for a few questions - meaning 4 and 6 points for a handful of questions. The point values are included with all questions so you'll see the points. We will only grade you by what is bubbled in on the answer sheet that you turn in. We will not look at your exam copy for answers, nor consider them in any way. Bubble carefully and correctly.

Bring the Following to the Exam

  • UT ID Card / picture ID
  • a pencil(s) - mechanical or wood
  • scanner only reads pencil - no ink!
  • bring eraser if you are prone to mistakes
  • bring a non-programmable, non-graphing, scientific calculator
  • we provide the rest - see previous section

DO NOT bring...

  • ink pens
  • graphing calculator
  • any type of programmable calculator
  • electronic devices - phones, earbuds, etc...
  • smart watches - put away that smart watch!

Learning Outcomes for Exam 2

Students will know...

  1. how to assign oxidation numbers in ions and compounds
  2. how to balance a redox reaction in acid and identify the number of moles of electrons transferred
  3. how to identify what is oxidized and what is reduced in a redox reaction as well as what is the oxidizing agent and reducing agent
  4. the differences in an anode and a cathode
  5. how to determine and calculate the standard potential of a cell when only given shorthand cell notation
  6. how to calculate amount of material converted during a redox reaction using electric current, time, number of moles of electrons, and the faraday constant / specifically that is utilizing → \({I\cdot t\over n\cdot F} = {\rm moles}\)
  7. how to use the Nernst equation to get a cell potential under NON-standard conditions → \(E = E^\circ -{0.05916\over n}\log(Q)\)
  8. the names and the differences in the three types of batteries → primary cells, secondary cells, and fuel cells
  9. the sign convention for voltaic and electrolytic cells (which electrode is positive and which is negative)
  10. how to classify many common batteries into the three battery types - common batteries are alkaline, NiMH, NiCad, lithium, Li-ion, lead acid
  11. know the basic redox chemistry (the reaction) of an alkaline cell and a lead acid battery