You are titrating a weak acid (pKa = 5.00) with a strong base. Which of the following indicators would likely be best for determining the “end point” as an estimate of the equivalence point?
a) Methyl Violet – Transition Range: pH 0.0 – 1.6
b) Cresol Red – Transition Range pH 0.2 – 1.8
c) Cresol Purple – Transition Range pH 7.6 – 9.2
d) Methyl Orange – Transition Range pH 3.1 – 4.4
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