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# Gas Laws

How many gas law type are there? 2
What are the two gas law types? Ideal / General
How are Ideal laws classified? Describes the interrelationship that exist amongst temperature, pressure, and volume.
What are some Ideal Gas Law examples? Boyle's, Charles', Gay-lussac's Laws
Boyle's Law At a constant temperature, a volume of gas is inversely proportional with pressure.
How is Boyle's Law written? P1V1 = P2V2
Charles Law At a constant pressure, a volume of gas is directly proportional with temperature.
How is Charles' Law written? V1/T1 = V2/T2
Gay-Lussac's Law At a constant volume, the pressure of a gas is directly proportional to temperature.
Gay-Lussac's Law written? P1/T1 = P2/T2
Henry's Law The amount of gas that is dissolved in a liquid is directly proportional to the partial pressure of the gas over the liquid.
What is the partial pressure of Oxygen in in the alveoli at room temperature? In pulmonary capillary? 100 Torr / 40 Torr
What is the partial pressure of Carbon Dioxide in the pulmonary capillary? In alveoli? 45 Torr / 0 Torr
What is the relationship with Henry's Law and temperature? Increasing temperature, decreases the amount of dissolved gas. Decreasing the temperature increases the amount of dissolved gas.
How does Henry's law relate to an anesthetized patient? Hypothermic patients remain anesthetized, Hyperthermic patients require more anesthesia.
Dalton's Law The total pressure exerted by a mixture of gases in a closed container at a given temperature is equal to the sum of the pressure that each gas exerts.
What is partial pressure? The pressure of each individual gas.
Example of Dalton's Law? Compressed air cylinder contains 21% Oxygen and 79% Nitrogen, Total pressure is 100%.
Dalton's Law and Henry's Law has some clinical importance. Oxygen is carried in blood in how many ways? 2
What are the ways oxygen is carried in blood? Dissolved in plasma and expressed as partial pressure, has affinity for RBCs and attaches to hemoglobin (SpO2).
Each gram of Hemoglobin carries how MLs of oxygen? 1.34 MLs
15 grams of Hemoglobin carries how much oxygen? 20.1 gm/dl
In 100 ml plasma, how many MLs are there? 0.003 MLs
Alveolar Partial Pressure of 100 mm Hg, each dl of plasma contains how much oxygen? 0.3 MLs
If you patient is anemic with only 5 gm HB, how much oxygen would this patient have per dl. 6.8 gm/dl
A low SpO2 can impact PaO2 by doing what? Decreasing the amount of oxygen in ml/dl. (A high HB with a low SpO2 has a small decrease in oxygen in ml/dl)
Avogadro's Law Equal volumes of gas at the same temperature and pressure contain the same number of molecules regardless of their chemical nature and physical property.
What is Avogadro's number? 6.023 x 10 to the 23rd power
What is a fundamental constant in chemistry? Avogadro's number
What does Avogadro's number do? Permits calculation of the amount of pure substance, and makes possible determination of how much heavier a simple molecule of one gas is than that of another.
What results from Avogadro's number? The relative molecular weights of gases can be ascertained by comparing the weights of equal volumes.
Created by: gmg005