1
Q
U for isolated system
A
Constant
2
Q
2nd law of thermodynamics
A
Entropy of isolated system tends to increase
3
Q
Isothermal
A
Constant temp
4
Q
Entropy is a
A
State function
5
Q
Why ΔSvap»_space; ΔSfus
A
From liquid to gas there’s large change in volume so molecules can move freely at higher speeds
6
Q
ΔS between reactants and products
A
ΔSsys
7
Q
Why does solvation decrease entropy
A
Water is polar ad will be bound by ions, forms salvation cage which restricts movement so order increases and entropy decreases
8
Q
Adiabatic
A
At constant heat
9
Q
3rd law of thermodynamics
A
Perfect crystal at T = 0K has 0 entropy
B18PA
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