Acetone (C₂H&O) is a liquid with a fruity smell, used for removing paint and nail polish. It is flammable, and its combustion goes as follows: C₂H₂O +402(g) → 3CO2(g) + 3H₂O( If the heat of formation for acetone is -249.4kJ/mol, how much heat in kJ would be released from burning 0.24mol of acetone? (Put your answer in the form a.bx10°, and give the values of a, b and c. For example, if you got 5.7x10 kJ your answer would be 574.) Answer
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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