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Bromothymol Blue is used in acid base titrations, would it be useful in titrating an acid with a pka of 9?
Please explain why or why not. Thank you in advance!
Also, what is the pka of Bromothymol Blue
2 Answers
- Anonymous9 years agoFavorite Answer
no, pka 9 is base
- Anonymous5 years ago
A molar answer means moles/Liter. You used 22ml of a zero.5M sol'n. That may be 11 miliMoles of NaOH (22*0.5). For every H+ it takes one OH-. But you don't know what the acid is. It could be HCl. That suggests there have been 11 milimoles of the acid. So that you had 11 milimoles in 30 mL. The awareness of the acid was a bit over 0.33M. (no calculator available). However the acid might have been H2SO4 (two H+). Where case the awareness would 1/2 or about zero.33/2 M. You need to be aware of what the acid is. Then balance the acid/base rxn. This may increasingly inform you how many moles of the bottom are used per mole of the acid.