The latent heat of fusion and vaporization of water is 333.6 J/g and 2256.7 J/g respectively at the normal melting and boiling point. Cp=D4.19 Jg-K-1 for liquid water, density=D0.917 g/cm³ for ice at 1 atm and 0 °C, density=1.000 g/cm3 and 0.958g/cm3 for water at 1 atm and 100 °C respectively. For liquid water, Cp varies slightly with T. The value given is an average over the range 0 °C and 100 °C respectively. Calculate below quantities for the melting for 1 mol of ice at 0 °C and 1 atm. 6010 (J) 0.165 (J) . AU 6010 v (J) ΔΗ 6010 V (J)
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.


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