G. Chem 3

aA + bB ⇔ cC + dD

Equilibrium:
(is thermodyn)
- - no net change in P or R
- - but!!! rxn is still going (rate fwd = rate rxn)
- Keq = [prod]/[react]
- (@ what concent of [R] & [P] the same)
- (apply to eq) *make sure to raise to coeff
- Keq = [C]^c[D]^d/ [A]^a[B]^b
Keq = __________
- - equilib constant
- - constant @ a given temp
- - do not include constant solid + liq (b/c can't ∆ concent)
- - include (aq) & (g)
Rule of equilib...

Any closed system will proceed towards equilibrium!
Trends in equil...

K_eq > 1, @ eq, more prod

K_eq < 1, @ eq, more react

K_eq = 1, @ eq, equal prod = react
What if not @ eq....
- Rxn Quotient
- Q = [prod]/[react]
Q always moves toward Keq
- Trends
- Q > K_eq P → R
- Q < K_eq P → R
- Q = K_eq @ eq
What if not closed system...

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Card Set

G. Chem 3

Description

G. Chem Class 3

Updated

2010-07-16T05:11:47Z

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