acid-base titrations lab - Kris Kelly Acid-Base Titrations...

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Kris Kelly Acid-Base Titrations lab CHEM122L 2/18/08 Introduction/Background: This experiment deals with the titration of acids and bases to the point of neutralization. Titration is a volumetric form of analysis used to accurately determine the concentration of a known reactant. The actual determination of this concentration of the reactant is called standardization. The neutralization of an acid and a base means that there were an equal number of moles of both acid and base reacting, so that the resulting products were water and a salt. The concentration of the base will be essential to the determination of finding the mass and percent of KHP in the unknown acid. Key Data: Molar Mass of KHP: 204.2 g/mol Unknown Acid: B Trial 1 for KHP Mass of bottle and KHP before removing KHP: 24.8816 g Mass of bottle and KHP after removing KHP: 24.2939 g Mass of removed KHP: .5877 g Initial buret reading: 50.00 ml Buret reading after titration: 17.67 ml Total NaOH used: 32.33 ml Trial 2 for KHP: Mass of bottle and KHP before removing KHP: 24.2939 g Mass of bottle and KHP after removing KHP: 23.8181 g Mass of removed KHP: .4758 g Initial buret reading: 50.00 ml Buret reading after titration: 25.60 ml Total NaOH used: 24.40 ml Trial 3 for KHP: Mass of bottle and KHP before removing KHP: 24.4750 g Mass of bottle and KHP after removing KHP: 24.8816 g Mass of removed KHP: .6590 g Initial buret reading: 50.00 ml Buret reading after titration: 20.10 ml
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Total NaOH used: 29.90 ml
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acid-base titrations lab - Kris Kelly Acid-Base Titrations...

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