Thermodynamics Flashcards
1
Q
What is the equation for change in enthalpy? What does having a negative change mean and what does having a positive change mean?
A
Hfinal- Hinitial
Negative - exothermic
Positive - endothermic
2
Q
What is Gibbs free energy and what equations can represent it?
A
Gfinal - Ginitial
(delta)G = (delta)H - T(delta)S
Energy available to do work
3
Q
What is entropy?
A
Measure of disorder within a system
4
Q
T/F
Exergonic processes are spontaneous?
A
True
5
Q
What is coupling?
A
Use of an exergonic process to drive an endergonic one
6
Q
Why do all spontaneous reactions have a -(delta)G, but not all
-(delta)G reactions are spontaneous
A
Because even if you have a -(delta)G you need energy as a catalysts to start the reaction
