February 25, 2017

Homework Help: Chemistry

Posted by Cris on Sunday, September 30, 2012 at 8:03pm.

Imagine that
you needed to choose an indicator for the titration of a strong base (like NaOH) with a strong acid
(like HNO3). You have the indicators in Table 1 available. Which indicator would you choose? Why?

Indicator [HIn] [ In] pKa
Maryland Red- Red Blue 4.3
Terrapin Yellow -Red Yellow 7.4
Terpel Purple - Blue Red 10.5

I think terrapin yellow would be the best choice because the pH of the equivalance point in a titration of strong base with a strong acid would be pH 7.

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