Acid and Base
Experiment 4:
ACIDS AND BASES: PH Measurements and Macroscale Titration
CHM023L – A12
Group no. 6 Members: | Contributions: | | Conclusion | | Recommendation | | Tables and figures with analysis | | Principles, Equation | | Abstract, tables |
Date Performed: February 28, 2012 - Tuesday
Date Submitted: March 6, 2012 - Tuesday
Submitted to:
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ABSTRACT:
This experiment introduces us the pH measurement and application of macroscale titration of aqueous solutions of acids and bases. The first part of the experiment was applying macroscale titration to calculate the mass of an HCl solution consumed that was initially done by pounding the tablets and getting a weight of 0.15 grams. The powdered form antacid was mixed with 100mL of 0.1M HCl in the erlenmeyer flask. It was stirred and heated until it boiled then was filtered. Two drops of phenolphthalein was added to the filtered solution. It was titrated with 0.1M NaOH until its color turned pink. The procedure was repeated for the second trial.
The second part of the experiment was acquiring the pH of solutions using calorimetric measuring tools. First is by using pH paper. The pH paper was dipped into the ten drops of 0.1M HCl then read the pH using the chart. The procedure was repeated using 0.1M NaOH, 0.1M CH3COOH, and 0.1M NH4OH. Next, the pH of 30mL of 0.1M HCl, 0.1M NaOH, 0.1M CH3COOH, and 0.1M NH4OH(placed separately into four beakers) was measured using pH meter. And lastly, the pH of the solutions was calculated using the obtained values from the procedures.
In the third part, the percent of acetic acid in vinegar was determined. The buret was rinsed with 0.2M NaOH and was later on filled with the same solution up to its mark of 0.0 ml. 5ml of commercial vinegar, 45ml distilled water and two drops of phenolphthalein was placed in the Erlenmeyer flask. The vinegar was titrated with 0.2 NaOH until its color turned to light pink and then the volume of
ACIDS AND BASES: PH Measurements and Macroscale Titration
CHM023L – A12
Group no. 6 Members: | Contributions: | | Conclusion | | Recommendation | | Tables and figures with analysis | | Principles, Equation | | Abstract, tables |
Date Performed: February 28, 2012 - Tuesday
Date Submitted: March 6, 2012 - Tuesday
Submitted to:
-------------------------------------------------
ABSTRACT:
This experiment introduces us the pH measurement and application of macroscale titration of aqueous solutions of acids and bases. The first part of the experiment was applying macroscale titration to calculate the mass of an HCl solution consumed that was initially done by pounding the tablets and getting a weight of 0.15 grams. The powdered form antacid was mixed with 100mL of 0.1M HCl in the erlenmeyer flask. It was stirred and heated until it boiled then was filtered. Two drops of phenolphthalein was added to the filtered solution. It was titrated with 0.1M NaOH until its color turned pink. The procedure was repeated for the second trial.
The second part of the experiment was acquiring the pH of solutions using calorimetric measuring tools. First is by using pH paper. The pH paper was dipped into the ten drops of 0.1M HCl then read the pH using the chart. The procedure was repeated using 0.1M NaOH, 0.1M CH3COOH, and 0.1M NH4OH. Next, the pH of 30mL of 0.1M HCl, 0.1M NaOH, 0.1M CH3COOH, and 0.1M NH4OH(placed separately into four beakers) was measured using pH meter. And lastly, the pH of the solutions was calculated using the obtained values from the procedures.
In the third part, the percent of acetic acid in vinegar was determined. The buret was rinsed with 0.2M NaOH and was later on filled with the same solution up to its mark of 0.0 ml. 5ml of commercial vinegar, 45ml distilled water and two drops of phenolphthalein was placed in the Erlenmeyer flask. The vinegar was titrated with 0.2 NaOH until its color turned to light pink and then the volume of
References: http://faculty.swosu.edu/jason.johnson/pdf/1252lab5.pdf http://www.docstoc.com/docs/25179297/Full-Lab-Report-Experiment-2-Acid-Base-Titration-Lab-Desc www.chem.uky.edu/.../che226/Labs/070-Acid-Base_Titration.pdf