lab 9 - Experiment #9: Determination of [KMnO4] by...

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Experiment #9: Determination of [KMnO 4 ] by Oxidation-Reduction Titration Name: Amershukri Abd Rani Performed: February 11th, 2009 Submitted: February 18th, 2009 Laboratory Instructor: Ijaz Ahmed Your Signature ___________________________________ Objective: The objective of this experiment was to determine the amount of oxalate in an impure sample through the use of a titration with potassium permanganate, after standardization with pure sodium oxalate. The titration is based on the oxidation-reduction properties of the reactants. II. Standardization of the KMnO 4 Solution Approximate molarity of KMnO 4 ___________mol/L Molarity of Na 2 C 2 O 4 ___________ mol/L Approximate titrant volume of KMnO 4 __________ L Table I: Standardization of KMnO 4 Solution with _______ moles Na 2 C 2 O 4 Trial Initial KMnO 4 (ml) Final KMnO 4 (ml) Used KMnO 4 (ml) [KMnO4] 1 7.45 38.70 31.25 2 6.00 37.20 31.20 3 7.25 38.55 31.30 4 6.25 37.50 31.25 Average [KMnO 4 ] __________ mol/L St. dev. [KMnO 4 ] __________ mol/L
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λ @ 95% conf. __________ mol/L
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lab 9 - Experiment #9: Determination of [KMnO4] by...

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