Objective The purpose of this lab was to perform acid base titrations using a pH electrode to monitor the equivalence point. Standardized NaOH was titrated with HCl and acetic acid using phenolphthalein as the indicator. Each titration was analyzed by the following plots to determine the equivalence point volume: pH vs volume, first and second derivative plot and Gran plot. Methods The pH meter and glass electrode were calibrated using buffers of pH 7 and 4. 25.00 mL of HCl solution was transferred
Acid-Base Titration BQ: 1) what is the strength of the antacid? 2) How accurate/precise is this strength? Safety consideration: Goggles and gloves must be worn at all time during experiment to prevent any contact with eyes and skin. If spilled any chemical in gloves throw it away and wear a new one immediately. Handle all chemical carefully. Handle all carefully to prevent from breaking. Procedure and Tests: Week 1 1) 600ml of a 0.5M NaOH solution will be needed, 3MNaOH is provided
The Environmental Protection Agency (EPA) has come to the lab group to investigate an abandoned chemical company. In specific, an unknown compound is to be investigated and identified. The lab group takes this goal a step further and also compares it against products found around the member’s homes. Multiple titrations will be performed, both with use of the PASCO program and by manual indicator. Through these experiments, different calculations will be performed to help in the analysis. In addition
Abstract By using acid-base titration, we determined the suitability of phenolphthalein and methyl red as acid base indicators. We found that the equivalence point of the titration of hydrochloric acid with sodium hydroxide was not within the ph range of phenolphthalein's color range. The titration of acetic acid with sodium hydroxide resulted in an equivalence point out of the range of methyl red. And the titration of ammonia with hydrochloric acid had an equivalence point that was also out of
Unknown weak acid (Vernier) Formal Lab Report Kelli McWatters August 7, 2017 Chem 1121 Dr. Reed Objective: Observe and measure a weak acid neutralization and determine the unknown identity of an unknown acid by titration. Introduction: Within an acid-base titration the titration curve resembles the strengths of the corresponding acids and bases. A strong acid will correspond with a weak conjugate base, and a weak conjugate acid will correspond with a strong base. This is based
pH Titration Practical Write Up: Introduction: This experiment includes a standard solution, which according to Lewis, R. and Evans, W. “is a solution of known concentrations”. They also stated that “the procedure in finding the concentration of a solution is called volumetric analysis. It involves reacting a solution of known concentration with one of the unknown concentration, in order to determine the equivalence point”. Titration is a technique where one reactant is slowly added to a second
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: ------------------------------------------------- ABSTRACT: This experiment introduces us the pH measurement and application of macroscale titration of aqueous
9/30/2012 AP Chemistry Lab Report I. Introduction: a) Title: The Establishment of a Chemical Equation Using the Method of Continuous Variation. b) Purpose: the continuous variation method is used to establish a chemical equation by displaying on a line graph the change/difference in temperature caused by the composition of acids and bases in the solution. II. Apparatus and Materials: A) Goggles B) Acid C) Base D) Digital Thermometer E) Pipet (10ml
weak acid and its conjugate base required to prepare the buffer solutions of specific pH. Examine pH behavior of buffer solutions using previously studied methods of measuring pH. Reinforce the proper use of volumetric glassware in preparation of solutions of a required concentration. Practice with titration technique in the determination of a buffer capacity. Introduction: A buffer solution is one that is resistant to change in pH value when small amounts of a strong acid or base are added
Final Lab Report 2 Sean Griffin CHM 2045L Imalka I. Introduction Background: Quality control is an important aspect of science and impacts life for average Americans daily. Just about every manufacturing facility used quality control, including medicine, food, and cosmetics. Quality control is used to determine if a product, like food contain what they say they do. For example, a company claiming to make healthy food may understate the amount of high fructose corn syrup (sugar), but