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Bromcresol Green

  1. Mar 30, 2006 #1
    Hi everyone.

    I'm doing a pre-lab for AP chem class. I forgot to check for specific data I need in the Merck. I was wondering whether anyone out there has the molar mass value and pKa of the indicator bromcresol green.

    Any help would be great.
    Thanks in advance.
  2. jcsd
  3. Mar 30, 2006 #2
    pKa = 4.7

    At least that's what a website said :).
  4. Mar 30, 2006 #3


    User Avatar

    And its molecular formula is C21H14Br4SO5, so I trust you can figure out the molar mass.
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