So... Hess's Law is pretty cool! We are able to determine the heat of reaction for one specific reaction using combinations of other reactions. As long as the net reaction is the same in terms of the reactants and products, we can use known heat of reaction values to calculate another heat of reaction value.
For the purposes of our lab, we are attempting to experimentally prove Hess's Law. The sum of the average heats of reaction for reactions 1 and 3 should come out to be pretty close to the value for reaction 2.
Post your insights and questions here! :-)
Pat
Friday, February 29, 2008
Hess's Law
Thursday, February 28, 2008
Excel Issues
Lab Sections 2 and 4, General Chemistry:
What are your issues with Excel? Let's talk about the problems we are having here, so the whole class can benefit. This will be our running "how-to" discussion for Excel issues. You will be able to access previous questions and solutions, ask your own questions, view my solutions to your specific problem, and also contribute your knowledge to benefit others.
Excelsior!
Pat
Subscribe to:
Posts (Atom)
A Few Words of Wisdom From Albert Einstein...
"Anyone who has never made a mistake has never tried anything new."
"The important thing is not to stop questioning. Curiosity has its own reason for existing."
"We can't solve problems by using the same kind of thinking we used when we created them."
"Peace cannot be kept by force. It can only be achieved by understanding."
source: Collected Quotes of Albert Einstein; Copyright: Kevin Harris 1995
"The important thing is not to stop questioning. Curiosity has its own reason for existing."
"We can't solve problems by using the same kind of thinking we used when we created them."
"Peace cannot be kept by force. It can only be achieved by understanding."
source: Collected Quotes of Albert Einstein; Copyright: Kevin Harris 1995
Chemistry Safety Video
NaOH and Aluminum Reacting
We will be using this reaction in class on March 7. We will react aluminum with aqueous sodium hydroxide. We will capture the gas that is produced. What is the gas?
Potassium Chlorate and Gummy Bears
No, We won't be doing this one in class...