Gas Laws

lpnflorida · Sep 14, 2008

http://en.wikipedia.org/wiki/Gas_laws

GilaRRT · Sep 14, 2008

I presume you are asking about Boyles law and the such. Remember many long hard days remembering these for the CFRN. Allow me to present you the idiots guide to gas laws?

Boyles Law- At a constant temp, the volume of a gas is inversley related to it's pressure. Remember- BOYLES BALLOON As a balloon rises, the air pressure decreases around the balloon and the pressure inside of the balloon increases. At a constant temperature, increasing one of the variables will cause the other to decrease. (Variables volume and pressure)

Daltons Law- Total pressure of a gas mixture is the sum of all the individual pressures of the individual gasses. Look at it like this: I have 50 mmhg of gas 1 and 50 mmhg of gas 2 in my atmosphere. The total pressure will be 100 mmhg.

Think- DALTON'S GANG.

Charles Law- When pressure is constant, gas volume changes with temperature. I leave an oxygen tank out in the hot sun for a few hours and the volume of gas in the tank will increase. Think- CHARLES CELSIUS

Gay Lussacs Law- Think- CHARLES GAY BROTHER. Nearly like Charles law but states pressure changes with temperature. For example; we leave the same oxygen tank out in the sun and the pressure will increase within the take as temperature increases.

Charles- Volume

Gays-Pressure

Henry's Law- The weight of a gas is in a dissolved liquid is proportional to the weight of a gas above the liquid. Thik of a bottle of beer. When you open it what happens? Right, carbon dioxide quickly leaves the solution once the top is taken off. The weight of the atmosphere is less than the weight of the gas dissolved in a bottle of beer thus gas moves out of the beer bottle into the atmosphere. This also explains the basic principle behind the bends. Think- HENRYS HEINEKEN.

Grahams Law- Gas will want to move from areas of high concentration to areas of low concentration right? However, more dense gas will move slower than less dense gas. Makes sense.

rhondaa83 · Sep 14, 2008

Have you googled it? That is what I do, when I want to find something.

hellgirl-srna · Sep 16, 2008

consider this...

(2007), Davis, P.D. & Kenny, G.N., Basic physics and measurement in anesthesia. 5th ed.

~it is one of the books we used in class and I found it to be very helpful as well as easy to understand. best wishes!

JHansen · Sep 18, 2008

PV=nRT best equation ever!

seanpdent, ADN, BSN, MSN, APRN, NP · Oct 4, 2008

I presume you are asking about Boyles law and the such. Remember many long hard days remembering these for the CFRN. Allow me to present you the idiots guide to gas laws?
Boyles Law- At a constant temp, the volume of a gas is inversley related to it's pressure. Remember- BOYLES BALLOON As a balloon rises, the air pressure decreases around the balloon and the pressure inside of the balloon increases. At a constant temperature, increasing one of the variables will cause the other to decrease. (Variables volume and pressure)
Daltons Law- Total pressure of a gas mixture is the sum of all the individual pressures of the individual gasses. Look at it like this: I have 50 mmhg of gas 1 and 50 mmhg of gas 2 in my atmosphere. The total pressure will be 100 mmhg.
Think- DALTON'S GANG.
Charles Law- When pressure is constant, gas volume changes with temperature. I leave an oxygen tank out in the hot sun for a few hours and the volume of gas in the tank will increase. Think- CHARLES CELSIUS
Gay Lussacs Law- Think- CHARLES GAY BROTHER. Nearly like Charles law but states pressure changes with temperature. For example; we leave the same oxygen tank out in the sun and the pressure will increase within the take as temperature increases.
Charles- Volume
Gays-Pressure
Henry's Law- The weight of a gas is in a dissolved liquid is proportional to the weight of a gas above the liquid. Thik of a bottle of beer. When you open it what happens? Right, carbon dioxide quickly leaves the solution once the top is taken off. The weight of the atmosphere is less than the weight of the gas dissolved in a bottle of beer thus gas moves out of the beer bottle into the atmosphere. This also explains the basic principle behind the bends. Think- HENRYS HEINEKEN.
Grahams Law- Gas will want to move from areas of high concentration to areas of low concentration right? However, more dense gas will move slower than less dense gas. Makes sense.

WOW.

Thanks for that plethora of kool kernels of wisdom.

GilaRRT · Oct 5, 2008

Thanks. Wish I could take the credit for these. However, a former flight RN/Medic is the one who originally helped me and many other learn the basics flight physiology and gas laws. In fact, he will be a newly minted CRNA any day now.