December 24, 2024, 12:33:53 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Fraction of Ethylene diamine that exists in the +1 State at pH= 8.0?  (Read 4134 times)

0 Members and 1 Guest are viewing this topic.

Offline zazjaju

  • New Member
  • **
  • Posts: 7
  • Mole Snacks: +0/-0
Fraction of Ethylene diamine that exists in the +1 State at pH= 8.0?
« on: November 28, 2010, 03:02:23 PM »
What is the fraction of ethylene diamine that exists in the +1 state at pH=8.0?

Please remember that Ethylene is not EDTA... these two are different things.

Struggling understanding the concepts, and would like somebody to help solve this.... thank you!
Logged

Offline ardbeg

  • Regular Member
  • ***
  • Posts: 82
  • Mole Snacks: +7/-3
Re: Fraction of Ethylene diamine that exists in the +1 State at pH= 8.0?
« Reply #1 on: November 28, 2010, 11:20:57 PM »
1) what is the pka of ethylene diamine?
Logged

Offline zazjaju

  • New Member
  • **
  • Posts: 7
  • Mole Snacks: +0/-0
Re: Fraction of Ethylene diamine that exists in the +1 State at pH= 8.0?
« Reply #2 on: November 28, 2010, 11:47:29 PM »
the pKa of ethylene diamine is 6.848. The corresponding Ka is 1.42 x 10^-7
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27888
  • Mole Snacks: +1816/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Fraction of Ethylene diamine that exists in the +1 State at pH= 8.0?
« Reply #3 on: November 29, 2010, 04:33:29 AM »
page is about indicators, but it applies here:

http://www.titrations.info/acid-base-titration-indicators
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info
Pages: [1]   Go Up
« previous next »
Sponsored Links