between hydrogen and oxygen to yield water vapor has AH 2H₂(g) + O₂(g)-2H₂O(g)AH <--484k Y Part A What is the enthalpy change in kilojoules when 0.70 mol of H₂ reacts with 0.35 mol of O, to produce 0.70 mol of H₂ at constant pressure of 1.00 atm? Express your answer as a whole number. AH = Submit Request Answer Part 8 10 ΑΣΦΑ Submit Part C How much PV work is done in kilojoules for this reaction at constant pressure of 1.00 atm f the volume change is -9.2 L Express your answer using two significant figures. ΟΙ ΑΣΦΑΛΗ 3? Request Answer What is the value of AE for this reaction in kilojoules? 3 C
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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