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
In this lab, a titration was performed in order to calculate find the concentration of hydrochloric acid. In the first part of the lab, the hydrochloric acid was then titrated with sodium hydroxide to obtain the concentration of the hydrochloric acid. In the second part of the lab, a base and/or antacid was over titrated with hydrochloric acid. It was then back-titrated using sodium hydroxide solution to determine how much hydrochloric acid was needed to neutralize the titration. Throughout the first
Introduction: The Objective of the lab is to determine the mass percent of ascorbic acid in a vitamin C tablet by titration with a sodium hydroxide solution of known concentration. A titration is a procedure in which we measure the volume of a solution of a solution of known concentration that is needed to completely react with volume of NaOH analyzing. A buret is used to measure the amount of NaOH in titration and it is a piece of calibrated glassware used to accurately deliver volumes of
RESULTS & DISCUSSION For this experiment, titrations on a weak acid, acetic acid, and a buffer were performed. Acetic acid was titrated with NaOH in order to observe the half-equivalence point as well as the equivalence point. Then, the buffer and the buffered acetic acid solution prepared faced additional titration with NaOH and HCl to evaluate the differing buffering effects following the addition of a strong acid and strong base. Finally, the buffer’s buffering capacity was calculated. If the
Mariam Sy May 8, 2014 Acid- Base Titration Lab Write-up Introduction: Titration is the process of adding measured volumes of a base or acid with a known concentration to an acid or base with an unknown concentration in order to determine the unknown concentration. Volume measurements play an important role in titration. It involves measuring the exact volume of a solution with a known concentration that will react with a measured volume of a solution that has an unknown concentration. The
For this experiment, a titration was performed to determine the unknown concentration of a given HCl sample by reacting it with a solution of sodium hydroxide. NaOH first had to be standardized due to it being hygroscopic. A hygroscopic substance is one that readily attracts water from its surroundings, through either absorption or adsorption.1 The titration of KHP with NaOH was the standardization process which determined the actual concentration of NaOH. This value helped determine the volume of
Abstract: The experimental experiment will be to make pH measurements and make a titration curve that will result the weak acid we are trying to identify. This procedure will be done twice to make sure the same characteristics of the unknown are both constant. The volume of the drop counter will be noted in the graph to help distinguish the molarity of the solution which will be noted in MicroLab. Introduction: This experiment was about identifying the unknown weak acid by conducting a step by
1 Experiment 7: Titration of an Antacid Objective: In this experiment, you will standardize a solution of base using the analytical tecnique known as titration. Using this standardized solution, you will determine the acid neutralizing power of a commercially available antacid tablet. Introduction An understanding of the properties of acids and bases is an essential part of understanding chemical reactions (see Tro, pp 167-171). In aqueous solutions, a compound that produces H+ ions upon dissolution
For this experiment, a series of strong acid-strong base titrations were performed to determine the unknown solution concentration of HCl. KHP was first titrated with NaOH in order to create a standardized solution of NaOH. This solution was used to titrate a known volume of the unknown 1 HCl solution. The results were then used to determine the exact concentration of the original HCl sample. One thing that could be changed during this lab is to use a more neutralized sample of deionized water. Throughout
Redox Titration Carmen Ontiveros* Arlette Renteria . CHEM 1A Lab, Department of Chemistry, California State University, Fresno, CA 93740 Carmenchick@mail.fresnostate.edu September 23, 2017 The purpose of this experiment was to determine how much KMnO4 was needed to titrate approximately 1 mL of an Unknow X101 concentrated solution of Oxalic Acid. A standardized KMnO4 solution was used on a known solution of Oxalic acid to help determine the unknown percent oxalic acid in unknown X101. The unknown