Chemical Equilibria Flashcards
1
Q
equlibrium constant (K)
A
shows how reaction sits at equilibrium: whether reaction favours forward or reverse direction
2
Q
reaction quotient (Q)
A
similar to K but uses activities not necessarily at equilibrium
3
Q
spontaneous change
A
a system not at equilibrium will spontaneously evolve towards equilibrium
4
Q
extensive property
A
dependent on the “extent” of a system e.g. V, n
5
Q
intensive property
A
independent of the “extent” of a system e.g. T, Pa, [A]
6
Q
homogenous system
A
values of intensive state functions are the same at every point in the system
7
Q
Le Chatelier’s Principle
A
“if a stress is applied to a system initially at equilibrium, the system will evolve spontaneously in the direction that tends to counteract the stress”
