What color is bromcresol green after it is added to a sample of #NaOH(aq)#?
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1 Answer
May 23, 2018
In aqueous solution, bromocresol green will ionize to give the monoanionic form (yellow), that further deprotonates at higher pH to give the dianionic form (blue), which is stabilized by resonance: The acid dissociation constant (pKa) of this reaction is 4.8.
(see => https://en.wikipedia.org/wiki/Bromocresol_green)
