November 25, 2024, 03:24:47 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Charge of Arginine at 5.6  (Read 3586 times)

0 Members and 1 Guest are viewing this topic.

Offline GeoffG

  • New Member
  • **
  • Posts: 8
  • Mole Snacks: +0/-0
Charge of Arginine at 5.6
« on: September 23, 2008, 11:47:19 PM »
Would it be 1+ or 2+?
Logged

Offline GeoffG

  • New Member
  • **
  • Posts: 8
  • Mole Snacks: +0/-0
Re: Charge of Arginine at 5.6
« Reply #1 on: September 24, 2008, 12:25:00 AM »
At pH 5.6 that is.
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27864
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Charge of Arginine at 5.6
« Reply #2 on: September 24, 2008, 03:00:15 AM »
SHow what you know.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline GeoffG

  • New Member
  • **
  • Posts: 8
  • Mole Snacks: +0/-0
Re: Charge of Arginine at 5.6
« Reply #3 on: September 24, 2008, 01:15:07 PM »
Okay. Well I think it would be 1+. The nearest pKa to 5.6 is at 2. So it's buffering capacity would be up to a pH of 3. And since 5.6 is above the buffering capacity, I would think that it wouldn't be able to take up a hydrogen ion.
Am I right?
Logged

Offline Yggdrasil

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 3215
  • Mole Snacks: +485/-21
  • Gender: Male
  • Physical Biochemist
Re: Charge of Arginine at 5.6
« Reply #4 on: September 28, 2008, 10:48:59 AM »
Arginine has three groups that act as acids/bases.  Based on their pKa's, which groups will be charged?
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links