When exactly one mole of chrysene, C₁8H12(s) is burned at 25°C in a bomb calorimeter, AE = -8942.6 kJ. When any hydrocarbon like chrysene is burned completely, the products are CO₂ and H₂O. (a) Write and balance the chemical equation for the combustion reaction of chrysene. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) Help chemPad XX Greek C18H12(s) + 210₂(g) 18C0₂(g) +6 H₂O( C_18H_12(s) + 210_2(g) --> 18CO_2(g) +6 H_20(1) Correct. (b) Determine the value of AH per mole for the combustion of chrysene at 298 K (25°C). 4.0 -8950.0 kJ/mol (c) When 1.1598 g of chrysene C18H12(s), was burned in a bomb, the the heat capacity of this calorimeter? 4.0✔ kJ/°C ure rose from 23.53°C to 25.39°C. What is
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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