A cylinder contains a mixture of gases under constant atmospheric pressure. The gases undergo a chemical reaction. Upon reacting, the gases absorb 553 J553 J of heat from the surroundings and the surroundings do 0.378 kJ0.378 kJ of ??PV work on the gases. What is the value of Δ?ΔH in joules for this process? What is the value of Δ?ΔE in joules for this process?
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.
A cylinder contains a mixture of gases under constant atmospheric pressure. The gases undergo a
What is the value of Δ?ΔE in joules for this process?
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