900 800 Carbon disulfide 700 600 Methanok 500 400 Ethanol 300 Heptane 200 100 10 20 30 40 50 60 70 80 90 100 110 Temperature (°C) The vapor pressure of chloroform is 400 mm Hg at 42.0 °C. From the plot of vapor pressures vs temperature above, estimate the pressure of carbon disulfide is 400 mm Hg. °C The intermolecular forces in chloroform are v than the intermolecular forces in carbon disulfide. stronger Submit Answer Retry Entire Group weaker p attempts remaining Vapor pressure (mm Hg)
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.
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