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Gas Laws
NYS Chemistry Gas Laws
Term | Definition |
---|---|
STP | standard temperature and pressure, found on table A |
Ideal Gas | gases that always obey the gas laws |
Real Gas | may not obey gas laws because they may be attracted to each other or have volume, depending on temperature and pressure conditions |
Effusion | movement of a gas through a tiny hole |
Kinetic energy | energy of movement. Temperature measures this kind of energy. |
P, V relationship | as external pressure increases, gas volume decreases (indirect) |
V, T relationship | as temperature increases, volume of a gas also increases (direct) |
Combined Gas Law | allows for calculation of the relationship between initial and final gas pressure, volume and temperature values |
Partial Pressures Law | the total pressure of a gas mixture is equal to the sum of the individual pressures, as is proportional to the mixture’s composition. |
Las of Gas Effusion | the smallest, lightest gas will effuse (escape) fastest through a leak in a gas container. |
Conditions when gases deviate from the ideal gas laws | high pressures and low temperatures |
Conditions when gases obey the ideal gas laws | low pressures and high temperatures |