7.0 Entropy Flashcards
(15 cards)
What is entropy?
Entropy is a measure of the disorder of a system
What is the first law of thermodynamics?
The total energy of the universe is constant
What is the second law of thermodynamics?
The entropy of the universe is increasing
When the number of particles in a system ____ (from ____ to _____) the entropy of a system ______
When the number of particles in an system increases (from reactants to products) the Entropy of a system increases
When ____ molecules ______ down into _____ or _____ molecules, the
____ of a system _______
When complex molecules break down into simpler or smaller molecules, the entropy of a system increases
When the ______ of a system increases, the ______ of the system _______
When the temperature of a system increases, the entropy of a system increases
When we go from ______ to ______ to _______, the ______ of a system ________:
When we go from solid to liquid to gas, the entropy of a system increases
When a _____ or _______ is dissolved in a liquid _______, the _______ of a system _______
When a solid or liquid is dissolved in a liquid solvent, the entropy of a system increases
What happens when a system reaches maximum entropy?
It reaches equilibrium and it appears to have constant properties
What is Gibbs Free Energy?
Equation that allows us to tell if a reaction is spontaneous or not
What is the GFE Equation?
ΔG (Joules) = ΔH (Joules) - T (Kelvin)ΔS(Joules/Kelvin)
How do you convert Celsius to Kelvin?
Add 273 to the Celsius value
When ΔG is positive, the reaction is…
Non spontaneous
When ΔG is negative, the reaction is…
When ΔG is positive, the reaction is…
When ΔG is 0, the reaction is…
At equilibrium
