5. Gasoline is composed primarily of hydrocarbons, including many with eight carbon atoms, called octanes. One of the cleanest-burning octanes is a compound called 2,3,4- trimethylpentane, which has the following structural formula: сH, сн, сн, H;C-CH-CH-CH-CH, The complete combustion of one mole of this compound to CO219) and H2O(9) leads to - AH° = -5064.9 kJ. a. write a balanced equation for the combustion of 1 mol of CaH18()- b. By using the information in this problem and data in the thermodynamic properties table, calculate AH; for 2,3,4-trimethylpentane.
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.
![5. Gasoline is composed primarily of hydrocarbons, including many with eight carbon
atoms, called octanes. One of the cleanest-burning octanes is a compound called 2,3,4-
trimethylpentane, which has the following structural formula:
сн, сн, сн,
H,C-CH-CH-
-CH-CH,
The complete combustion of one mole of this compound to CO219) and H2O(9) leads to -
AH° = -5064.9 k].
a. write a balanced equation for the combustion of 1 mol of CeH18()-
b. By using the information in this problem and data in the thermodynamic properties
table, calculate AH; for 2,3,4-trimethylpentane.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fac4c28ae-941b-47e9-84b7-cbd70f221db8%2F5397ad1f-3780-44bd-bd96-a87b744624c9%2Fbjojs2o_processed.jpeg&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
