The amount of sodium hydrogen carbonate, NaHCO3, in an antacid tablet is to be determined by dissolv — Equilibrium Chemistry Question
Question
The amount of sodium hydrogen carbonate, NaHCO3, in an antacid tablet is to be determined by dissolving the tablet in water and titrating the resulting solution with hydrochloric acid. Which indicator is the most appropriate for this titration?
A.✓ Correct
methyl orange, pKin = 3.7
B.
bromothymol blue, pKin = 7.0
C.
phenolphthalein, pKin = 9.3
D.
alizarin yellow, pKin = 12.5
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