Lec 28 Spontaneity Flashcards
1
Q
How do you calculate total Enthalpy change of rxn if given only bond energies
A
Add up reactants energy’s and subtract from products energy
2
Q
What is the heat of formation for pure elements
A
0
For pure metals and elements (o2 H2 Zn)
3
Q
Is entropy change is greater than zero:
A
Reaction is spontaneous, increase in the entropy of the universe
4
Q
The reverse process of a spontaneous rxn needs what to move forward?
A
Work, to make water freeze
5
Q
If something is less stable, what does that say about its degradation?
A
Degrades faster than more stable
