Showing posts with label Gas Laws. Show all posts
Showing posts with label Gas Laws. Show all posts
Friday, May 13, 2016
Gas Law Reflection
I have not prepared enough for the gas laws test, I understand Pv=nrt but I have not spent enough time doing practice problems or learning the applications of the laws. I should spend some time reviewing these before finals and making sure that i am confident finding partial pressure, molar mass, and the identity of a gas. I should spend more time viewing websites like these:
Gas Law Links
Here are some links that will help to learn gas laws.
http://www.chemguide.co.uk/physical/kt/idealgases.html
http://www.engineeringtoolbox.com/ideal-gas-law-d_157.html
https://www.youtube.com/watch?v=BxUS1K7xu30
It is Important to understand the Algebra of Pv=nrt, as it can be rewritten in many different forms.
Most pproblems can be solved using this equation but one could be puzzled because they thought
you would always use the same form. So be prepared to use n=PV/rt or T=PV/nr.
http://www.chemguide.co.uk/physical/kt/idealgases.html
http://www.engineeringtoolbox.com/ideal-gas-law-d_157.html
https://www.youtube.com/watch?v=BxUS1K7xu30
It is Important to understand the Algebra of Pv=nrt, as it can be rewritten in many different forms.
Most pproblems can be solved using this equation but one could be puzzled because they thought
you would always use the same form. So be prepared to use n=PV/rt or T=PV/nr.
Common Units
Here are some common units of pressure and the important temperature conversion we need to know:
Most often when using gas laws, you will need to get the temperature from degrees celsius to degrees kelvin. This is a VERY simple conversion that can be done by adding 273.15 to the degrees celsius reading as 0 degrees celsius is equivalent to 273.15 degrees kelvin. Here is an example:
26 degrees celsius+ 273.15 =299.15 Degrees Kelvin.
Most often when using gas laws, you will need to get the temperature from degrees celsius to degrees kelvin. This is a VERY simple conversion that can be done by adding 273.15 to the degrees celsius reading as 0 degrees celsius is equivalent to 273.15 degrees kelvin. Here is an example:
26 degrees celsius+ 273.15 =299.15 Degrees Kelvin.
Gas Laws Intro
Now we are learning about the properties of gases. One can calculate the pressure a gas exerts, its temperature at a certain pressure, even it's unknown identity using the Ideal Gas Laws. Gases are interesting bits of matter as they are the only ones that can be compressed and have no definite volume. Here is the ideal gas law that we will use: Note* The Universal Constant is .0821
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