Chapter 3 Flashcards
(14 cards)
What mnemonic helps remember oxidation and reduction reactions?
LEO the lion says GER or OIL RIG
What is the role of the oxidizing agent in a redox reaction?
It gains electrons and oxidizes the other substance
What is the role of the reducing agent in a redox reaction?
It loses electrons and reduces the other substance
What does oxidation involve?
Removal of H atoms or addition of O atoms
What does reduction involve?
Addition of H atoms or removal of O atoms
What is the main difference between endergonic and exergonic reactions?
Endergonic: free energy is gained; Exergonic: free energy is released
What is the ΔG for endergonic reactions?
ΔG is + (positive change in free energy)
What is the ΔG for exergonic reactions?
ΔG is - (negative change in free energy)
What type of reaction is characterized by the products containing more free energy than the reactants?
Endergonic reaction
What type of reaction is characterized by spontaneous energy release?
Exergonic reaction
What does an endothermic reaction entail regarding thermal energy?
Thermal energy is absorbed (ΔH= +)
What does an exothermic reaction entail regarding thermal energy?
Thermal energy is released (ΔH= -)
Give an example of an endothermic reaction.
Photosynthesis
Give an example of an exothermic reaction.
Campfire
