D Question 8 Consider the reaction of CH4 and O₂ to produce CO₂ and H₂O (make sure you balance!): Given that dHxn is -890. kJ/mol for this reaction, what is dH when 0.500 mol CO₂ reacts with plentiful H₂O to form CH4 and O₂? Provide numerical answer in kJ (no units, just number). Include + or - sign as relevant. Use appropriate sig figs.
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.
![D
Question 8
Consider the reaction of CH4 and O₂ to produce CO2 and H₂0 (make sure you balance!):
Given that dHxn is -890. kJ/mol for this reaction, what is dH when 0.500 mol CO₂ reacts with
plentiful H₂O to form CH4 and O₂?
Provide numerical answer in kJ (no units, just number). Include + or - sign as relevant. Use
appropriate sig figs.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7e1b1278-e2ec-45f2-aba8-449498888978%2F84ace04b-d8c9-448b-9c7e-b17fe5a938b7%2F01b3nn_processed.jpeg&w=3840&q=75)
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