Get Full Essay Get access to this section to get all help you need with your essay and educational issues. Get Access Acid-Base Titrations: Analysis of Antacid Tablets Essay Sample This experiment was performed to learn the technique of acid-base titration and to compare the efficiency of commercially available antacids by looking at their weight of HCl and weight of antacid values.
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A titration is a procedure in which two solutions are introduced to form a reaction that once completed, reaches an identifiable endpoint Murphy,p. During a titration, the volume of one reagent, the analyte, is predetermined while the other reagent, the titrant, is prepared in a buret and slowly introduced to the analyte solution.
The completion of this reaction can be determined via observation through the use of an indicator. The amount of titrant released from the buret at the endpoint signifies the volume of solution necessary to complete the reaction.
From this given volume, the concentration of either titrant or analyte can be determined when equilibrium is reached between reactant and product Murphy,p. In this experiment, the reagents combined are an acid, HCl aq and a base, NaOH aq where the acid is the analyte and the base is the titrant.
The reaction between the two is as follows: In part A of this experiment, the concentration of NaOH aq was determined. The reaction is as follows: From this, the change in molarity between the initial concentration of HCl aq and the moles neutralized will determine the mass of the active ingredient in the antacid that can later prove the effectiveness of antacid brands as buffers.
Begin by preparing a 0. In 3 separate mL Erlenmeyer flasks, pipet 25 mL of 0. An indicator, phenolthalein, must be added to the analyte solution to make the endpoint visible. Release the titrant into the analyte solution until the reaction has occurred completely. This will become apparent when the solution remains a constant pink color.
Use the calculated molarity from the volume of titrant to standardize the solution produced and prepare second half of experiment. Prepare the standardized NaOH aq solution in a Once cooled, add the indicator Methyl Purple. Slowly release the titrant and observe the solution transition from purple, the initial state, to grey, the midrange, and green, the endpoint.
Once completed, use the volume of titrant released to calculate the moles of excess HCl aq and determine the mass of CaCO3 s present in the antacid tablet. Data Summary Part A: Standardization of NaOH Trial 1.Acid-Base Titration: Analysis of Antacid Tablets D i s s o l v i n g S e t t i n g u p T I T R A T I O N E L G A VALUES Repeat for second trial Experiment # 11 Introduction TITRATION - method of analysis to determine: > unknown concentration of a substance > the precised endpoint of reaction ACID and BASES chemical substances forms salt bitter.
Ninnah Gendill CHE Formal Lab Report Analysis of Antacid Tablets I. Introduction An acid-base titration is a method of neutralizing strong acids. Transcript of Acid-Base Titration: Analysis of Antacid Tablets.
Acid-Base Titration: Analysis of Antacid Tablets D i s s o l v i n g S e t t i n g u p T I T R A T I O N red and blue litmus papers.
> determines whether the substance or chemical is acidic, basic or neutral. OBJECTIVES M E T H O D O L O G Y DOCUMENTATION Weigh antacid tablets. CHM Acid-Base Analysis of Antacid Tablets Introduction We encounter acids and bases in many places in our everyday lives. From stomach acid to the soda we drink and our household cleaners.
Our stomach acid is a mixture of many different compounds that .
Acid-Base Titrations: Analysis of Antacid Tablets Essay Sample. This experiment was performed to learn the technique of acid-base titration and to compare the efficiency of commercially available antacids by looking at their weight of HCl and weight of antacid values.
The analysis of antacid tablets was highlighted in this experiment. Analysis of antacid Aim The aim of this lab is to find how much 1 moldm-3 of HCl is neutralized for different brands of antacids, per recommended dosage (1 tablet or 5ml of suspension) Variables.