nixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The inder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The inder is also submerged in a large insulated water bath. (See sketch at right.) 1 atm pressure piston cylinder m previous experiments, this chemical reaction is known to release 320. kJ of energy. water E gases e position of the piston is monitored, and it is determined from this data that the piston does 154. kJ of work on the stem during the reaction. O exothermic the reaction exothermic or endothermic? O endothermic O up bes the temperature of the water bath go up or wn? O down O neither O in pes the piston move in or out? O out O neither O in pes heat flow into or out of the gas mixture? O out O neither ow much heat flows? Be sure your answer has ne correct number of significant digits. 474 kJ Explanation Check O2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center search W 28°C Mostly cloudy A F.
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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