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February 28, 2015

Homework Help: chemistry

Posted by tarkan on Friday, December 24, 2010 at 5:15pm.

an impure sample of oxalic acid C2O4H2, with a mass of 0.465g, is dissolved in water. a few drops of phenolphthalein indicator solution are added, and the solution is titrated with 0.190 mol/L aqueous sodium hydroxide held in a burette. the solutointurns pink when 49.5mL of sodium hydroxide has been added. what is the percent purity of the oxalic acid sample.
please somebody help me with that is a assignment and i need to finish it and also understand it clearly....so plz can someone show me how to do it with steps and tell me the answer too plzzzzzzzzz......thank you :)

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