1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Delta G and Keq Urgent, test in 1 day

  1. Apr 14, 2005 #1
    I got these two questions i have no idea how to do (i have answers, but no soln's)
    1. Given that the affinity constatn Keq for rxn A+B=AB is 5x10^6 and the concentration of free molecules at equillibrium are Afree = 1x10^-4 and B = 1x10^-8, what is the ration of AB to A at equillibrium

    ans: 0.05 : 1

    2. What is the Delta G for the forward reaction x <-> y.
    R = 1.98x10^-3 kcal/molK
    T = 298K
    K'eq = 7.5

    (ans: -1.18kcal/mol)
  2. jcsd
  3. Apr 14, 2005 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

  4. Apr 14, 2005 #3
    Use [tex]K_{eq} = \frac{[AB]}{[A]} [/tex]
  5. Apr 14, 2005 #4
  6. Apr 14, 2005 #5


    User Avatar
    Science Advisor
    Homework Helper

    [tex]K= \frac{[x]}{[A-x][B-x]} [/tex]

    You should be able to find such equations in the text by yourself, the're all listed explicitly.

    ...since it's urgent
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook