ch9 - energetics Flashcards
1
Q
first law of thermodynamics
A
energy is neither created nor destroyed
2
Q
q
A
heat absorbed by the system, q<0 heat exits system, q>0 heat enters system
3
Q
w
A
work done on system, w<0 work done by system, w>0 work done on system
4
Q
E=
A
q+w
5
Q
endothermic
A
heat goes into the system (q>0)
6
Q
exothermic
A
heat exits the system (q<0)
7
Q
uphill in enthalpy
A
endothermic
8
Q
downhill in enthalpy
A
exothermic
9
Q
second law of thermodynamics
A
entropy of universe increases in all spontaneous processes
10
Q
gibbs free energy change
A
g=h-ts
11
Q
g<0
A
forward rxn is spontaneous
12
Q
g>0
A
reverse rxn is spontaneous
13
Q
g=0
A
rxn is at equilibrium
14
Q
transition state
A
species present at energy max
15
Q
activation energy (energy barrier)
A
energy required to form the transition state
