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WHAT IS GAS?
Gas is defined as a homogeneous fluid which has low density and low viscosity and the volume of the gas is assumed to have the volume equal to the volume
of the vessel.
The classification of gasses are:
-IDEAL GAS
-NON IDEAL OR REAL GAS
WHAT IS GAS?
Gas is defined as a homogeneous fluid which has low density and low viscosity and the volume of the gas is assumed to have the volume equal to the volume
of the vessel.
The classification of gasses are:
-IDEAL GAS
-NON IDEAL OR REAL GAS
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PROPERTY, SYMBOL, COMMON UNITS
PROPERTY, SYMBOL, COMMON UNITS
DENSITY (d), g.l-1
TEMPERATURE (T), K
PRESSURE (P), mm hg
VOLUME (V), cm
AMOUNT OF GAS (n), mol
PROPERTIES OF GAS
Gases have no discernible volume or shape. They completely occupy all available space. The ability of gases to fill the available volume within a container is due to the flexibility that gas particles have to go anywhere in the available area. Because of the exceedingly weak binding interactions between molecules, gaseous molecules may move independently. To put it another way, their intermolecular forces are quite weak. As a result, the molecules in a gas are in constant motion and have a high velocity and hence a high kinetic energy.
PROPERTIES OF GAS
Gases have no discernible volume or shape. They completely occupy all available space. The ability of gases to fill the available volume within a container is due to the flexibility that gas particles have to go anywhere in the available area. Because of the exceedingly weak binding interactions between molecules, gaseous molecules may move independently. To put it another way, their intermolecular forces are quite weak. As a result, the molecules in a gas are in constant motion and have a high velocity and hence a high kinetic energy.
THE FOLLOWING ARE THE PROPERTIES:
THE FOLLOWING ARE THE PROPERTIES:
COMPRESSIBILITY
COMPRESSIBILITY
Particles of gas have huge intermolecular spaces in the midst of them. By the exertion of pressure, much of this space can be diminished and the particles are brought closer. Thus, the volume of gas can be hugely reduced. This is termed as compressing the gas
EXPANDABILITY
EXPANDABILITY
When you apply pressure to gas, it contracts. As pressure is released, however, the gas expands.
When the temperature rises, the component particles gain energy, travel quicker, and move further apart. As a result, the intermolecular attraction becomes less noticeable. The volume of the gas expands.
DIFFUSIBILITY
DIFFUSIBILITY
The molecules of the gas are constantly moving at rapid speeds. There is a lot of intermolecular space between the molecules. Particles of one gas can easily flow across the intermolecular gap of the other gas when two gases are combined. As a result, both gases are thoroughly and consistently combined. As a result, a gas mixture remains homogenous at all times.
LOW DENSITY
LOW DENSITY
Since gases have huge intermolecular gaps, their volumes are quite enormous in comparison to their mass. As a result, they have lower densities. If 1 milliliter of water at 39.2oF is converted into steam at 212oF at 1 atmosphere pressure, it will take up 1700 ml of space.
EXERTION OF PRESSURE
EXERTION OF PRESSURE
Solids can only apply pressure in the downward direction. Liquids exert downward as well as sideways pressure. Nevertheless, gases exert pressure in all directions (a good sample is a balloon). This pressure is caused by particle bombardment against the vessel's walls.
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