Teaching High School Chemistry
  • Introduction
  • Book
  • Blog
  • Topic List
  • Teaching Resources
  • Biography
  • Contact

Gay Lussac's Law

2/2/2014

0 Comments

 
A third gas law is the relationship between pressure and Kelvin temperature, Gay Lussac's Law:

P / T = P / T

Again, the temperature must be in Kelvins!  There cannot be negative or zero temperatures, so the Kelvin scale is used.

Kelvin = Celsius degrees  +  273

Here's a problem solving video:
Notice that he includes unit cancellation in his solution -- the units are very important!

I never performed a classroom lab based on this gas law, but here is a cute demonstration:
Here is another demonstration I did perform:
Notice that both videos are by students -- I wonder if a teacher had an assignment relating to the gas laws and uploading a video to YouTube was an option -- or it was extra credit.

BTW, Kelvins are not reported with degrees (as the student did) -- it's an easy mistake to make.

Many labs use calculator-based pressure sensors -- not everybody has access to that, so I'm not posting those type of labs here.  If your department has them, your department probably has a lab procedure that already has been used.  If not, here's your chance to set a precedent!  Go  for it!

And, check out my lab book "Chemistry on a Budget"  at:
http://www.amazon.com/Chemistry-Budget-Marjorie-R-Heesemann/dp/0578129159/ref=sr_1_1?s=books&ie=UTF8&qid=1389410170&sr=1-1&keywords=chemistry+on+a+budget

Each lab is presented with two possible report formats -- both with the same procedure -- one with 10 questions to be answered as a conclusion, the other with a full laboratory report required.  This was to give the teacher the option of what type of report is desired!

*I'd love to hear about your experiences or if you have ideas for other topics for this blog.

Have a good week!



0 Comments



Leave a Reply.

    Author

    Marjorie R. Heesemann is a chemistry teacher with 15 years of experience who is now working to develop resources for the Chemistry classroom.

    Archives

    June 2019
    May 2019
    April 2019
    March 2019
    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014
    June 2014
    May 2014
    April 2014
    March 2014
    February 2014
    January 2014

    Categories

    All

    RSS Feed

Powered by Create your own unique website with customizable templates.