June 24, 2024, 08:02:20 AM
Forum Rules: Read This Before Posting


Topic: predicting equilibrium molar ratio of N to O with kh values and T  (Read 5693 times)

0 Members and 1 Guest are viewing this topic.

Offline Sodium-Potassium Pump

  • Regular Member
  • ***
  • Posts: 16
  • Mole Snacks: +1/-0
I don't want an answer this problem but I just don't even know where to start so if someone could give me a basic idea of how to go about solving this I would really appreciate it.  Thanks!

Air contains 78% N2 and 21% O2 (mole percentages).
Predict the equilibrium molar ratio of nitrogen to oxygen ([N2]/[O2]) dissolved in water which is exposed to air at 298 K.
N2(g) over water: kH = 8.57×104 atm
O2(g) over water: kH = 4.34×104 atm
(Assume ideal gas behaviour.)

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27709
  • Mole Snacks: +1804/-411
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: predicting equilibrium molar ratio of N to O with kh values and T
« Reply #1 on: February 18, 2007, 12:16:22 PM »
Henry's Law
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Sodium-Potassium Pump

  • Regular Member
  • ***
  • Posts: 16
  • Mole Snacks: +1/-0
Re: predicting equilibrium molar ratio of N to O with kh values and T
« Reply #2 on: February 18, 2007, 01:27:47 PM »
OK, if K is supposed to be solubility (mols/L) why is it given as a pressure? I am so confused.

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27709
  • Mole Snacks: +1804/-411
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: predicting equilibrium molar ratio of N to O with kh values and T
« Reply #3 on: February 18, 2007, 02:16:44 PM »
IMHO k is supposed to be Henry's Law constant, L*atm/mol or something.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Sponsored Links