Bromocresol green become yellow in acidic solutions.
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Dissolve 20mg methyl red and 100mg bromocresol green in 100ml 95% ethyl alcohol.
B.G. pKa solutions In solutions of equal concentration: pH= pKa Threrfore pKa 4.68.
pKa=40
Bromocresol green become yellow in acidic solutions.
Fractional distillation can be used to separate bromocresol green and methyl red. This is because the two have close boiling points.?æ
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Examples: turmeric, methyl red, bromocresol green.
Dissolve 20mg methyl red and 100mg bromocresol green in 100ml 95% ethyl alcohol.
B.G. pKa solutions In solutions of equal concentration: pH= pKa Threrfore pKa 4.68.
pKa=40
how do you calculate pKa
Methyl Red, methyl orange, bromophenol blue, phenolphthalein, thymolphthalein, bromocresol green, bromothymol blue are all used as acid base indicators.
pKa=2.86
pH indicator
pKa = 15