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April 19, 2015

Homework Help: chemistry(Urgent Please help)

Posted by Hannah on Sunday, November 20, 2011 at 3:53pm.

A student is asked to standardize a solution of barium hydroxide. He weighs out 0.945 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid).

It requires 33.9 mL of barium hydroxide to reach the endpoint.

A. What is the molarity of the barium hydroxide solution?

This barium hydroxide solution is then used to titrate an unknown solution of nitric acid.

B. If 19.8 mL of the barium hydroxide solution is required to neutralize 20.4 mL of nitric acid, what is the molarity of the nitric acid solution.

I have no idea how to do this. Thank you for your help!

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