The next three questions refer to the graph. Pressure is on the vertical axis, volume on the horizontal. One mole of an ideal gas is taken reversibly through the cycle a b-c-a, shown schematically in the diagram. The isobaric transition occurs at 1.2 atm, and the isochoric transi has volume 52.6 L. Transition ca is isothermal at 231 K. The constant-pressure, temperature independent molar heat capacity for the gas is Cp = 20.8 J/mol-K. What is the temperature of state "b" in degrees Celsius? what is the heat change of the system for
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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