G. Chem 3

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Author:
Anonymous
ID:
26993
Filename:
G. Chem 3
Updated:
2010-07-16 01:11:47
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Chem CLO
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Description:
G. Chem Class 3
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  1. 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
  2. Keq = __________
    • - equilib constant
    • - constant @ a given temp
    • - do not include constant solid + liq (b/c can't ∆ concent)
    • - include (aq) & (g)
  3. Rule of equilib...
    Any closed system will proceed towards equilibrium!
  4. Trends in equil...
    Keq > 1, @ eq, more prod

    Keq < 1, @ eq, more react

    Keq = 1, @ eq, equal prod = react
  5. What if not @ eq....
    • Rxn Quotient
    • Q = [prod]/[react]

    Q always moves toward Keq

    • Trends
    • Q > Keq P → R
    • Q < Keq P → R
    • Q = Keq @ eq
  6. What if not closed system...

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