You have a sample of gas in a container with a movable piston,such as the one in the drawing. (a) Redraw the containerto show what it might look like if the temperature of the gasis increased from 300 to 500 K while the pressure is kept constant.(b) Redraw the container to show what it might looklike if the external pressure on the piston is increased from1.0 atm to 2.0 atm while the temperature is kept constant.(c) Redraw the container to show what it might look like ifthe temperature of the gas decreases from 300 to 200 K whilethe pressure is kept constant (assume the gas does not liquefy).[Section 10.3]
Ideal and Real Gases
Ideal gases obey conditions of the general gas laws under all states of pressure and temperature. Ideal gases are also named perfect gases. The attributes of ideal gases are as follows,
Gas Laws
Gas laws describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. The very first observations about the physical properties of gases was made by Robert Boyle in 1662. Later discoveries were made by Charles, Gay-Lussac, Avogadro, and others. Eventually, these observations were combined to produce the ideal gas law.
Gaseous State
It is well known that matter exists in different forms in our surroundings. There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. The last two are known newly in the recent days. Thus, the detailed forms of matter studied are solids, gases and liquids. The best example of a substance that is present in different states is water. It is solid ice, gaseous vapor or steam and liquid water depending on the temperature and pressure conditions. This is due to the difference in the intermolecular forces and distances. The occurrence of three different phases is due to the difference in the two major forces, the force which tends to tightly hold molecules i.e., forces of attraction and the disruptive forces obtained from the thermal energy of molecules.
You have a sample of gas in a container with a movable piston,
such as the one in the drawing. (a) Redraw the container
to show what it might look like if the temperature of the gas
is increased from 300 to 500 K while the pressure is kept constant.
(b) Redraw the container to show what it might looklike if the external pressure on the piston is increased from
1.0 atm to 2.0 atm while the temperature is kept constant.
(c) Redraw the container to show what it might look like if
the temperature of the gas decreases from 300 to 200 K while
the pressure is kept constant (assume the gas does not liquefy).
[Section 10.3]
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