09pVinegartitration

09pVinegartitration - Strength of Vinegar by Acid-Base...

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Click to edit Master subtitle style Strength of Vinegar by Acid-Base Titration Final Exercise – 105 points Last Update: 2/2/10 07:10:05 AM
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? QUESTIONS ? With what accuracy and precision can you determine the concentration of a solution of sodium hydroxide? Using that NaOH solution, with what accuracy and precision can you determine the concentration of a solution of acetic acid by titration?
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Concepts: Strong/Weak Acids Acid Dissociation/Ka Concentration End point / Equivalence point Titration curves Logarithms Indicator Mole Relationships pH & pKa Titration Techniques: Titration pH Measurement Apparatus: Burets pH Meter Primary Standard Weighing by Difference Preparing precise solutions Standardization Volumetric Flask Analytical Balance Pipet From last week This week
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potassium hydrogen phthalate (KHP) Last exercise involved acid-base titration in which concentration of NaOH was given. In this exercise, you will STANDARDIZE the NaOH solution Standardization Analytical determination of the purity or concentration of a substance through reaction with a substance of verified composition and purity ( Primary Standard ) This STANDARDIZATION involves the reaction of NaOH with a PRIMARY STANDARD, the weak acid: O O H O O - K + H phthalic acid
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is a monoprotic weak acid. One available proton. [K+] + H C8H4O4- + OH- C8H 4 O4= + H2O + [K+] The stoichiometry of the reaction is: Acetic acid, CH3COOH , is also a monoprotic weak acid. 1 mol KHP
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This note was uploaded on 02/01/2010 for the course CHE 133 taught by Professor Robertschneider during the Winter '08 term at SUNY Stony Brook.

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09pVinegartitration - Strength of Vinegar by Acid-Base...

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