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October 22, 2014

Homework Help: college chemistry

Posted by Cristian on Monday, October 1, 2012 at 8:05pm.

In the derivation of this expression:

[ln]/[HIn]A# 2 * A#1,acid/A# 2,basic * A#1

We assumed that the HIn form of the indicator is the only form present in the most acidic solution. Is this a valid assumption? Why or why not? Support your answer by determining the amount of In--‐ present in the most acidic solution. You may assume that the initial concentration of the indicator is 1mM.

I think that the assumption of the Hln form of the indicator is the only form present in the most acidic solution is valid but I am not sure how I would go about supporting my answer by determining the amount of ln- present in the most acidic solution.

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