Benzene is a common nonpolar solvent used in industry and research. It has the following thermodynamic data: Hfus = 127 J/g Hvap = 394 J/g m.p. = 5.5oC b.p. = 80.0oC csolid = 1.51 J/g oC cliquid = 1.73 J/g oC cgas = 1.06 J/g oC What energy (in joules) is involved when 35.0 g of benzene cools from 95.0 oC to 55.0 oC? (Please use at least 3 non-zero digits!)
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Benzene is a common nonpolar solvent used in industry and research. It has the following
Hfus = 127 J/g Hvap = 394 J/g m.p. = 5.5oC b.p. = 80.0oC csolid = 1.51 J/g oC cliquid = 1.73 J/g oC cgas = 1.06 J/g oC What energy (in joules) is involved when 35.0 g of benzene cools from 95.0 oC to 55.0 oC? (Please use at least 3 non-zero digits!)
Given,
The mass of benzene = 35.0 g.
The amount of energy is involved to change temperature from 95.0 °C to 55.0 °C is:
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