Formulate a combustion reaction of benzene, liquid C6H6 My answer: 2C6H6 + 15O2à 12CO2 + 6H2O In experiments performed with a bomb calorimeter, it was found that the change of the internal energy in this combustion process is equal to: ΔU=-3264 [kJ x mol-1] Assuming that the temperature during the experiment is 298 degrees Kelvin, calculate the percentage difference between the change in enthalpy and the change in energy
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.
Formulate a combustion reaction of benzene, liquid C6H6
My answer: 2C6H6 + 15O2à 12CO2 + 6H2O
In experiments performed with a bomb calorimeter, it was found that the change of the internal energy in this combustion process is equal to:
ΔU=-3264 [kJ x mol-1]
Assuming that the temperature during the experiment is 298 degrees Kelvin, calculate the percentage difference between the change in enthalpy and the change in energy
Step by step
Solved in 5 steps with 2 images
