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Module #19 Bio

QuestionAnswer
Where is energy found in chemicals? energy is stored in chemical bonds that hold atoms together known as covalent bonds
The amount of energy in a molecular bond is called? Bond energy
What is free energy? is the portion of energy of a system that can preform work
Why is free energy always less than the bond energy that gave rise to it? tightly bond electrons have lower potential energy than those shared equally
What factors contribute to making a reaction spontaneous? Decrease internal molecular energy or if they increase entropy
What factors contribute to changes in Gibbs free energy? Enthalpy and entropy
What two factors contribute to making a reaction spontaneous? Decrease internal molecular energy or if they increase entropy????
What does (H) refer to? Enthalpy; the total energy found in molecules
What is Gibbs free energy (G) and how is it calculated? is the measure of its instability; by entropy and enthalpy
How does spontaneity differ from rate?
What is the (G) value of exergonic? G<0
What is the (G) value of endergonic? G>0
Why are exergonic reactions often coupled?
Why are endergonic reactions coupled?
What is the G value when reactions are at equilibrium? G=0
 

 



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