Help please with Chemistry lab-Tritration of strong and weak acids?

Posted on 2015-12-02 06:48:00 in Chemistry by ASHLEY LEO

During the experiment the color change happened after adding 28.05 ML of NaOH to 25 ML of HCL. The pH was 9.97 (volume 53.12ml) I believe this is the equivalence point.

1. At the equivalence point, how many moles of 1 M NaOH were added to the flask? To get the number of moles, multiply the molarity by the number of liters of NaOH added.

2. Using the number of moles of HCL in the flask and the fact that 25 ML of acid were added, calculate the molarity of the HCL solution. (Molarity=moles/liter)

Any explanation would be much appreciated!

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