Lab 8- Acid-Base Titrations

Lab 8- Acid-Base Titrations - Date performed: 10/26/10...

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Date performed: 10/26/10 Name: Brian Lubnow Date Submitted: 11/2/10 Partner: Rebekah Balint Instructor: Alex Xu Experiment 2: Measurement 1 Objective: The purpose of this lab was to use titration to determine the concentration or the molar mass of different reactants by observing the reactions. Experimental Data: Part A Molarity HCl: 0.200 M Volume NaOH used Titration 1: 20.50 mL ± 0.1mL Volume NaOH used Titration 2: 22.20 mL ± 0.1mL Volume NaOH used Titration 3: 20.60 mL ± 0.1mL Part B Volume NaOH used Trial 1: 19.00 mL ± 0.1mL Volume NaOH used Trial 2: 19.40 mL ± 0.1mL Part C Mass Aspirin: 0.32 g ± 0.01 g Volume NaOH used: 6.60 mL ± 0.1mL Sample Calculations 1
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Part A: Molarity NaOH = MHClVHCl MNaOHVNaOH . . ± . = ( . ± . ) 0 200M25 00mL 0 1mL MNaOH 20 50 mL 0 1mL Molarity NaOH = .244 M Average Molarity = . +. = . 244 2432 0 244 M Part B: Molar mass unknown acid = Molarity NaOH molesvolume . = (. ) 244 M moles 01920 L Moles NaOH= .005 = moles acid = moles massmolar mass . = 005 1gmolar mass
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This note was uploaded on 10/04/2011 for the course CHEM 1036 at Virginia Tech.

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Lab 8- Acid-Base Titrations - Date performed: 10/26/10...

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