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What is the favorable condition for liquefaction of gases?
The temperature must be below the critical point and the phase can change to liquid by cooling the gas. If the gas is at conditions of temp and pressure below the triple point, the gas will instead be converted to a solid.
Which diatomic elements are gases at room temp?
hydrogen-gas nitrogen-gas oxygen-gas fluorine-gas chlorine-gas bromine-liquid iodine-solid
Why can gasses be easily liquefied?
easily liquifiable gases like Cl2, NH3,SO2,HCl are readily adsorbed because the critical temp of these gases are more. so it is easily liquified and adsorbed more readily.[critical temp is the minimum temp above which a gas cannot be liquified]easily liq. gases possess greater vanderwaals forces ,so they are adsorbed readily.these are the 2 reasons why these gases are readily adsorbed than permanent gases like H2, O2.N2 . etc
What would happen if the volume of gas decreased and then increased?
The temp of the gas would first rise, then drop. If the final volume of the gas is lower than the volume at the start, the temp will be higher than at the start. If the final volume is greater than at the start, then the temp of the gas will be lower than at the start.
What is the liquefaction point of oxygen gas?
In order to liquify oxygen gas, the critical temperature is 154.58K (i.e., -118.57 °C) and the critical pressure is 5.043MPa.
Highest temp of a gas?
Critical temperature
What refers to the temperature above which a gas cannot be liquefied by an increase in pressure?
This is known as the "Critical Temperature". For example, CO2 has a critical temp of 31.2 degrees C and NH3 has a critical temp of 132 degrees C
What has the author Lawrence T Drzal written?
Lawrence T. Drzal has written: 'Adsorbate-adsorbent interactions by gas adsorption' -- subject(s): Absortion and adsorption, Gases, Adsorption
What is adsorption site?
An adsorption site is a location on a surface where molecules or particles can adhere or bind due to attractive forces. It is where adsorption occurs, where a substance accumulates on the surface of another material. Adsorption sites are important in processes like catalysis, gas separation, and water treatment.
Is ammonia a gas temp?
gas at room temp
What is the different between desorption and adsorption?
desorption-changing from an adsorbed state on a surface to a gaseous or liquid state and adsorption-the accumulation of molecules of a gas to form a thin film on the surface of a solid
Should refrigerants be operated at temperatures above or below their critical temperature?
The critical temperature of a refrigerant is the point at which it changes states. In a refrigeration scenario, this happens 2 times per cycle. The refrigerant is a liquid on the high pressure side, and below its critical temp. On the low pressure side it becomes a vapor (gas) and its above its crictal temp. So the answer is both, depending on what side of the system you are on.
What is a gas at room temp?
a gas.
What is the favorable condition for liquefaction of gases?
The temperature must be below the critical point and the phase can change to liquid by cooling the gas. If the gas is at conditions of temp and pressure below the triple point, the gas will instead be converted to a solid.
What is the critical temperature of gasoline?
The critical temperature of gasoline is the temperature at which it becomes combustible and varies according to the pressure the gas is under. On average this temperature is 241 degrees Celsius.
What is the importance of critical pressure?
The critical pressure of a substance is the pressure required to liquefy a gas at its critical temperature. Some examples are shown below.
What are the properties of SF6 gas?
Can moisture exist in liquid sf6? Yes but other properties include: Molar Mass 146.078, Critical Temp 45.55C, Critical pressure 37.59 bars. It is very stable, colourless, odorless, non-toxic, non-flammable, usually stored in liquid form and is the most potent Greenhouse Gas known.
