Diethyl Zinc is a very unstable compound. When it comes in contact with the air, it burns to form zinc oxide, CO2, and water. The reaction occurs as the Diethyl Zinc comes into contact with oxygen molecules. The chemical equation is as follows: Zn(C2HS)2 (1) + 502 (g) → ZnO(s) + 4CO2(g) + 5H20(1) a) Given the following data calculate the entropy change for this reaction. All data is at 298 K. Zn(C2HS)2 (1), Sm° = 290.2 J K' mol1 O2 (8), Sm° = 205.138 J K' mol1 ZnO(s), Sm° = 43.64 J K1 mol1 CO2(8), Sm° = 213.74 J K' mol1 H20(1), Sm° = 69.91JK' mol1 b) The reaction is known to be highly exothermic. Comment on whether the reaction is spontaneous or not.
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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