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19 Nov 2019
Experiment 9 Prelaboratory Assignment Potentiometric Analyses Date Lab See Desk No. None a. Por a weak acid (e.g.. CH.COO) that is itraedwith a strong base ..Na0t), what species are present in the solution at the stoichiometrie point b. For a weak acid (e.g. CHCOO) that is titraed with a strong base (e g. NaoH), what species Gions/molecules) re present in the solution at the haltway point in the titration toward the stoichiometric point? 2. A 21.54-ml. volume of 0.130 M NaOH is required to reach the stoichiometric point for the titration of 25.00 ml of a 0.112 HCI solution. Would the titration of 25.00 mL of a 0.112 M CH,COOH solution require more, less, or the same volume of the 0.130 M NaOH solution? Explain. 3. Briefly explain how the pK, for a weak acid is determined in this experiment. 4. A 23.74-ml volume of 0.0981 M NaOH was used to titrate 25.00 ml. of a weak monoprotic acid solution to the stoi chiometric point. Determine the molar concentration of the weak acid solution. Express your answer to the corre number of significant figures. Experiment
Experiment 9 Prelaboratory Assignment Potentiometric Analyses Date Lab See Desk No. None a. Por a weak acid (e.g.. CH.COO) that is itraedwith a strong base ..Na0t), what species are present in the solution at the stoichiometrie point b. For a weak acid (e.g. CHCOO) that is titraed with a strong base (e g. NaoH), what species Gions/molecules) re present in the solution at the haltway point in the titration toward the stoichiometric point? 2. A 21.54-ml. volume of 0.130 M NaOH is required to reach the stoichiometric point for the titration of 25.00 ml of a 0.112 HCI solution. Would the titration of 25.00 mL of a 0.112 M CH,COOH solution require more, less, or the same volume of the 0.130 M NaOH solution? Explain. 3. Briefly explain how the pK, for a weak acid is determined in this experiment. 4. A 23.74-ml volume of 0.0981 M NaOH was used to titrate 25.00 ml. of a weak monoprotic acid solution to the stoi chiometric point. Determine the molar concentration of the weak acid solution. Express your answer to the corre number of significant figures. Experiment
Hubert KochLv2
27 Oct 2019