When 1.000 g of olive oil is completely burned in pure oxygen in a bomb calorimeter, the temperature of the water bath increases from 22.000ºC to 22.241ºC. a. How many dietary calories(Cal) (1 Cal = 1 kcal) are in olive oil, per gram? The heat capacity of the calorimeter is 9.032 kJ/ºC and 1cal. = 4.184J. b. Olive oil is pure glyceryl trioleate, C57H104O6. The equation of the combustion of thissubstance is : C57 H104O6(l) + 80 O2(g)→57 CO2(g) + 52 H2O(l) What is the heat of combustion of glyceryl trioleate in kJ per mol?
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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