Molar Mass & pKa of Bromcresol Green - AP Chem Pre-Lab

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The discussion centers on the molar mass and pKa of the indicator bromcresol green for an AP chemistry pre-lab. The pKa value is confirmed to be 4.7. The molecular formula provided is C21H14Br4SO5, which can be used to calculate the molar mass. Participants are encouraged to assist with this data. Accurate information is crucial for the pre-lab preparation.
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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.
 
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pKa = 4.7

At least that's what a website said :).
 
And its molecular formula is C21H14Br4SO5, so I trust you can figure out the molar mass.
 
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