December 30, 2024, 11:08:51 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: About complexometric titration  (Read 3632 times)

0 Members and 1 Guest are viewing this topic.

Offline key_i

  • New Member
  • **
  • Posts: 3
  • Mole Snacks: +0/-0
About complexometric titration
« on: November 22, 2006, 05:45:40 AM »
i would like to ask why hydroxynaphthol blue indicator instead of eriochrome Black T is used in determining the conc. of Ca2+ ion (only Ca ions).
Logged

Offline Albert

  • Lonely Wanderer
  • Retired Staff
  • Sr. Member
  • *
  • Posts: 1050
  • Mole Snacks: +112/-22
  • Gender: Male
  • Half Decent Pharmaceutical Chemist
Re: About complexometric titration
« Reply #1 on: November 22, 2006, 02:01:41 PM »
Because the complex calcium-eriochrome isn't very stable (log Kf=5.5).
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links