Acid Value Of Saponification

Improved Essays
IV. METHODOLOGY
SAPONIFICATION VALUE
Saponification is a method used in treating a neutral fat with alkali, breaking it down to glycerol and fatty acids. The saponification value or saponification number is the amount of alkali needed to saponify the given quantity of fat or oil, expressed as mg potassium hydroxide to saponify 1 g of the sample.
In this experiment, the researchers used chemicals such as ethanol, hydrochloric acid (HCl), potassium hydroxide (KOH) and phenolphthalein indicator. Laboratory Apparatuses and Equipment such as 650 mm long Air (reflux) condenser, 250 ml beakers, Buchner funnel, boiling beads, 50 ml burets, Coconut oil sample, filter papers, 250ml Erlenmeyer flasks, pipettes, side-arm flask, hot plate, water bath
…show more content…
It is the percentage by weight of a specific fatty acid. The Acid value is defined as the mg of potassium hydroxide needed to neutralize the free acids present in 1 g of oil.
In this experiment, the researchers used chemicals and reagents such as ethanol, Sodium hydroxide (NaOH) and Phenolphthalein Indicator. Laboratory Apparatuses and Equipment such as 250ml beakers, Buchner funnel, 10ml buret, 250ml Erlenmeyer flasks, coconut oil sample, filter paper, 100ml graduated cylinder, volumetric pipette, side-arm flask, hot plate and Analytical balance.
First, filter the oil sample using filter paper to remove impurities. Next, weigh 5g of coconut oil into 250ml Erlenmeyer flask. Then, add 100ml of neutralized ethanol and 2ml of phenolphthalein indicator. After that, shake until the mixture is completely dissolved. Titrate with standard base 0.1N NaOH, shake vigorously until the endpoint is reached. This is indicated by a slight pink color that persists for 30 seconds. Record the volume of the titrant used. Finally, repeat the steps more carefully in triplicate, recording each weight of the sample and the volume of the

Related Documents

  • Improved Essays

    6.03 Ph Lab

    • 2243 Words
    • 9 Pages

    The purpose of this experiment is to determine the pH of known substances by use of a pH color indicator of red cabbage and the use of a pH meter. As well as, to observe the pH changes in a substance by adding in more basic of acidic to buffered solutions and unbuffered solutions. This experiment will also will show how to calculate H3O+, OH- and pH by use of known values. In order to do this lab, there are a few key components one needs to know and understand first.…

    • 2243 Words
    • 9 Pages
    Improved Essays
  • Great Essays

    Quantification of Iron in Whole Grain Cereal Jacob Rickman and Yasmeen Coan Submitted to: Curt Zanelotti CHEM 1045, Experiment No. 12, April 15, 2016 LABORATORY WRITTEN REPORT Honor Code Signature: _________________ Objective In this experiment, we gained an understanding of the relationship between chemistry and food products while developing and enhancing good lab techniques. We applied dilution concepts to carry out the experiment.…

    • 1251 Words
    • 6 Pages
    Great Essays
  • Improved Essays

    Multip Ph Lab Report

    • 621 Words
    • 3 Pages

    The objective of the experiment is to investigate twelve household products and compare the results to the predictions made before the beginning of the experiment. Also, determining whether the substances are…

    • 621 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Nt1310 Unit 1 Lab Report

    • 157 Words
    • 1 Pages

    Three test tubes where number 1-3, the first and second test tubes (#1,#2) where mark at 1cm and 5cm from the bottom of the test tube while test tube #3 was mark at 3cm and 7cm. Test tube #1 was filled up to the 1cm mark with distilled water and to 5cm with Hydrogen peroxide. The substance was swirl for 30 seconds and the height of the bubbles column where recorded. Test tube #2 was fill up to the 1cm mark with catalase and to the 5cm mark with hydrogen peroxide. The substance was swirl for 30 second and the height of the bubbles column where recorded.…

    • 157 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    Unknown Lab Report

    • 750 Words
    • 3 Pages

    Materials. Numerous substances in the experiment were used. The most frequently used was the unknown due to the need to test its physical and chemical qualities. When a solution of the unknown was made, 1.000 g of the unknown and 1.0 mL of water was used to make it. To test for the possible ions, 1.0 mL of silver nitrate and 1.0 mL of nitric acid were used for the ion test.…

    • 750 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    The second procedure is Heat or cool water to 50 degrees Fahrenheit. The second procedure is once water is at right temperature, measure 7 teaspoons into small container. The third procedure is drop fourth tablet into water and quickly close the lid .The fourth procedure is shake container for three seconds. The fifth procedure is to place the container, bottom side up, and start stopwatch.…

    • 611 Words
    • 3 Pages
    Improved Essays
  • Superior Essays

    Color Analysis Lab

    • 1098 Words
    • 5 Pages

    The purpose of this lab is to determine the Ka of an indicator within an unknown solution. This can be determined because acid-base indicators are weak bases or acids, and when neutralized they change colors. The color change is measured by the light absorption spectra in the compound which can be used to calculate the concentration. This experiment measures the concentrations by the different pH values which allows the pKa and Ka to be determined. Through the experiment, and the recorded color change with the use of the Spec 20 the unknown Ka of the solution was found.…

    • 1098 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    A graduated cylinder was used to measure 200mL of distilled water into an Erlenmeyer flask and then 40mL of 0.6 M NaOH was added to the distilled water in the flask. The flask was then plugged with a rubber stopper and shook in order to mix the solution. A buret was then washed, rinsed with distilled water, and then 5 mL of the NaOH diluted solution. After the cleansing of the buret, it was then filled up with the NaOH diluted solution. The dilution of the solution was calculated to find the molarity of the NaOH.…

    • 281 Words
    • 2 Pages
    Improved Essays
  • Superior Essays

    Introduction: The purpose of this experiment is to determine the product that is produced from sodium hypochlorite oxidizing 2-ethyl-1,3-hexanediol and this experiment is to also determine if sodium hypochlorite is a selective oxidizing agent. This reaction is an oxidation reaction. The reaction involves the removal hydrogens and sometimes the addition of oxygen. 2-ethyl-1,3-hexanediol will undergo an oxidation reaction to produce an unknown product (Scheme 1). (1) Scheme 1. 2-ethyl-1,3-hexanediol undergoes a reaction with sodium hypochlorite and glacial acetic acid to produce an unknown product.…

    • 1586 Words
    • 7 Pages
    Superior Essays
  • Great Essays

    Project 3 Identification and Synthesis of an Unknown Ionic Compound Mitchell Morgan CEM-161-007 Josh Ward 28th October 2015 Abstract The chief objective of this experiment was to identify the unknown compound. The following tests were conducted to eventually establish the identity of the compounded: qualitative solubility tests, anion and cation tests, flame test, and the formation of a precipitate. The physical properties of the unknown ionic compound found that it has no smell and was soluble in water.…

    • 1462 Words
    • 6 Pages
    Great Essays
  • Decent Essays

    Hydrogel Lab Report

    • 220 Words
    • 1 Pages

    After we got the grains measure we then poured them into a 300-400 mL beaker and added 100 mL of distilled water, We then stirred it right away and eventually…

    • 220 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    Purpose: The experiment focused on isolating terpenes from citrus peels using supercritical carbon dioxide liquid phase. The experiment also focused to identify/ quantify organic compounds using IR and gas chromatography. Experimental: The experiment procedure can be found in the Organic Chemistry Manual in chapter 6.2 pages 6.11-6.21 and also in Appendix D: experimental records Results and Discussion: Part A: All the lemon peel date was obtained from my lab partner Irini Petros as cited in the references (2).…

    • 989 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Abstract This experiment involved an electrophilic aromatic substitution of bromobenzene. Two products were formed: 4-nitrobromobenzene (4-NBB) and 2-nitrobromobenzene (2-NBB). Utilizing column chromatography and recrystallization, separation and purification of the two products was obtained. The mass of 4-NBB, the para product, was 1.57 grams, while the mass of 2-NBB, the ortho product, was 0.80 grams.…

    • 1570 Words
    • 7 Pages
    Improved Essays
  • Great Essays

    Acid Base Titration Essay

    • 731 Words
    • 3 Pages

    The KHP was dissolved with distilled water in an Erlenmeyer flask and two to three drops of the indicator were added. A bottle was filled with the NaOH solution to be used during all titrations in order to standardize and therefore find the concentration of the solution. A clean buret was then filled with a portion of the NaOH solution, allowed to settle from air bubbles, and then dispensed into the flask to titrate the…

    • 731 Words
    • 3 Pages
    Great Essays
  • Great Essays

    Experiment 1: Standardisation of approximately 0.25 M Hydrochloric Acid Abstract The aim of the study was to standardise a solution of hydrochloric acid with an approximate concentration of 2.5 M against sodium carbonate solution. The main steps of this experiment were preparing the sodium carbonate solution, transferring the solution into a conical flask by using a pipette, adding the bromophenol blue indicator and titrating with hydrochloric acid until the first green colour appeared. The concentration of hydrochloric acid was found to be 0.2508 mol L-1. Introduction Standardisation is a process which is carried out to determine the actual molarity of a solution.…

    • 746 Words
    • 3 Pages
    Great Essays