Thermodynamic equations / Conecpts Flashcards
1
Q
when Δ G > 0
A
NOT spontaneous
2
Q
when Δ G < 0
A
SPONTANEOUS
3
Q
when Δ H < 0
A
EXOTHERMIC
3
Q
Gibbs Equations in Standard-State Free Energy of Formation
A
ΔG* = ∑ΔGf (Product) - ∑ΔGf (Reactant)
3
Q
when Δ S > 0
A
MORE Disorder LESS Ordered
4
Q
when Δ S < 0
A
LESS Disorder MORE Ordered
4
Q
when Δ H > 0
A
ENDOTHERMIC
5
Q
Gibbs Equations in Reactions
A
ΔG = ΔH - TΔS
6
Q
Gibbs Equations in Equilibria / Electrochem (NOT AT eq.)
A
ΔG = ΔG* + RT ln(Q)
7
Q
Gibbs Equations in Equilibria (AT eq.)
A
ΔG = ΔG* + RT ln([C][D]/[A][B])
8
Q
At Equaillibrium ΔG is
A
0
9
Q
At the Boiling point ΔG is
A
0
10
Q
Gibbs Equations in Electrochem
A
ΔG = −nFE
11
Q
INTERNAL ENERGY EQUATION
A
ΔE = q + w or ΔE = q - pΔV
12
Q
ENTHALPY EQUATION
A
ΔH = E + pΔV
13
Q
WORK EQUATION
A
w = -pΔV
14
Q
What is THERMODYNAMICALLY STABLE
A
When K is less, G > 0, H is low, S is high
15
Q
A
