Tuesday, November 24, 2015

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?

Thursday, November 19, 2015

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.


Thursday, November 12, 2015

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?

Monday, November 9, 2015

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.

Thursday, November 5, 2015

November 5, 2015

Search on the internet the following "exercise and blood buffers". Use the articles you find to address ONE of the following questions in order from 1 to 6 please. Identify which question you are answering by number.
1. We are paying attention to the concept of anaerobic exercise, define this term and give an example of when this type of exercise occurs.
2. What is the body's immediate reaction to intense (anaerobic) exercise?
3. What blood buffers are impacted during intense exercise?
4. How do some athletes counteract the effect of intense exercise on blood buffers?
5. Explain (using Le Chatelier's Principle) the reason "nutritional" supplements counteract the effect of intense exercise.
6. What are some of the side effects to the "nutritional" supplements used?

If we address all of these questions, I will add a topic so that we can continue the thread.


Looks like we have addressed these questions. Let's now look at the following site: http://scifun.chem.wisc.edu/chemweek/biobuff/biobuffers.html Discuss ONE of the concepts from this information.