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11 Nov 2019
w wenk asid (e g. CHcOOH) that is titrated with a strong base (eg. NaOH) what species (ions/molecules) are in the solution at the stoichiometric point? CH 3 t a. Are preserve in soakon b. For a weak acid (es. CH.Coou, that is titrated with a strong base (e.g. NaO1H, what species (ions/molecules) Sole are present in the solution at the halfway point in the titration toward the siochiometric point 2. Briefly explain how the pK, for a weak acid is determined in this ex ay point of tation A 23.74 ml volume of 00% 1 M NaOH was used to titrate 25.0 mL of a weak monoprotic acid solution to the sui- chiometric point. Determine the molar concentration of the weak acid solution. Express your answer to the correct number ofsignificant figures. iM,Vr=MzVe 23 7ëxD-0991:25', y 29,74 0,0991 : 25' y M. NaOH 0.099/ 4. Data in the following table were obtained for the titration of a 0.297-g sample of a solid, monoprotic weak acid with a 0.150 M NaOH solution. Plot (at right) pH (ordinate) vs. VNaow (abscissa). a. To determine the molar mass and the pK, of a solid, monoprotic weak acid, a titration of the weak acid with a standardized NaOH solution provided the following data in the table. Naow added (mL) pH 1.96 2.22 S 2.46 2.77 1 3.06 3.29 ë 3.60 7s 4.26 0.00 2.00 4.00 10.00 12.00 14.00 16.00 17.00 18.00 20.00 11.08 11.67 5 12.05 12.40 25.00 ãPrf e Stoich.bneme psiner 7.5 Vbl Experiment 18 233
w wenk asid (e g. CHcOOH) that is titrated with a strong base (eg. NaOH) what species (ions/molecules) are in the solution at the stoichiometric point? CH 3 t a. Are preserve in soakon b. For a weak acid (es. CH.Coou, that is titrated with a strong base (e.g. NaO1H, what species (ions/molecules) Sole are present in the solution at the halfway point in the titration toward the siochiometric point 2. Briefly explain how the pK, for a weak acid is determined in this ex ay point of tation A 23.74 ml volume of 00% 1 M NaOH was used to titrate 25.0 mL of a weak monoprotic acid solution to the sui- chiometric point. Determine the molar concentration of the weak acid solution. Express your answer to the correct number ofsignificant figures. iM,Vr=MzVe 23 7ëxD-0991:25', y 29,74 0,0991 : 25' y M. NaOH 0.099/ 4. Data in the following table were obtained for the titration of a 0.297-g sample of a solid, monoprotic weak acid with a 0.150 M NaOH solution. Plot (at right) pH (ordinate) vs. VNaow (abscissa). a. To determine the molar mass and the pK, of a solid, monoprotic weak acid, a titration of the weak acid with a standardized NaOH solution provided the following data in the table. Naow added (mL) pH 1.96 2.22 S 2.46 2.77 1 3.06 3.29 ë 3.60 7s 4.26 0.00 2.00 4.00 10.00 12.00 14.00 16.00 17.00 18.00 20.00 11.08 11.67 5 12.05 12.40 25.00 ãPrf e Stoich.bneme psiner 7.5 Vbl Experiment 18 233
Reid WolffLv2
2 Feb 2019