December 8, 2015

As we finish this semester of General Chemistry, comment on your use of this Discussion Forum. Let me know whether you found it useful and in what manner.

Thanks for your participation!

December 3, 2015

Discuss one aspect of a comparison of a voltaic cell and an electrolytic cell.

In other words, we want to compare and contrast these two types of cells. The first person to respond choose one aspect to discuss and then the next person choose another aspect, etc.

December 1, 2015

Read the following article. What would you be looking for in a car that runs on a hydrogen-oxygen fuel cell?

http://phys.org/news/2014-03-nrel-hydrogen-fuel-cells.html

November 24, 2015

We will ask a chain of questions again about Chapter 17 and thermodynamics! First person, answer my question, then ask your own. Continue on in this fashion.

A chemical reaction has an decrease in entropy and is exothermic. Is this reaction always spontaneous, never spontaneous or explain the impact of temperature on the spontaneity?

November 19, 2015

Read through the following article on Entropy. (I know, it is sort of long!) Did this article clarify material for you? If so, what and how?

http://entropysimple.oxy.edu/content.htm#second_law

Also attached is a couple of  youtube video that are interesting.

https://www.youtube.com/watch?v=ykUmibZHEZk

https://www.youtube.com/watch?v=ZsY4WcQOrfk

November 12, 2015

Answer the previous posted question and then post a question of your own, let's keep them conceptual. 
I will start with a question:  How do I identify when a salt is amphoteric?

November 9, 2015

Use the solubility product constant table (available under the resources tab on Oncourse) to answer the following question:

Which substance is more soluble in a pure sample of water: barium carbonate or lead(II) carbonate?

Explain your answer and ask another question about solubility equilibrium for the next person to answer.