Homework Help: Chemistry--titrations

Posted by Alexa on Tuesday, May 11, 2010 at 12:14am.

What characteristic of phenolphthalein makes it appropriate to use in a HCl/NaOH titration? and is it possible to do a titration without it, and without using another indicator? Why? I really don't get all this because i was gone for the lesson.....

Chemistry--titrations - DrBob222, Tuesday, May 11, 2010 at 12:28am
I wasn't there either; therefore, I don't know what was covered. But I'll take a stab.
a. I think the color change from colorless to faint pink is easy to see.
b. Without phenolphthalein or anothr indicator? One could use a pH meter.
Chemistry--titrations - Alexa, Tuesday, May 11, 2010 at 12:31am
Thank you VERY much!

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