Preview

Lab Report on Acid-Base Titration

Good Essays
Open Document
Open Document
448 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Lab Report on Acid-Base Titration
1. Aim: To determine the weight-to-volume percent of acetic acid present in commercial vinegar and the weight-to-volume percent of ammonia present in window cleaners. Acid-base titrations can be conducted using the above samples against standardized aqueous NaOH and standardized aqueous HCl solutions respectively.
2. Introduction:
Acetic acid, commonly known as ethanoic acid CH3COOH, is found in commercial vinegar. It is a weak organic acid that gives vinegar its characteristic pungent smell, sour taste and slight acidity. Being an acid, vinegar is used as a mild disinfectant in cleaning agents as well as a food preservative. Ammonia, NH3, is used in household and industrial cleaning agents due to its ability to solubilize grease. In this experiment, we shall use acid-base titration to determine the weight-to-volume percentage of acetic acid and ammonia. An acid-base titration is a process of obtaining quantitative information of a sample using an acid-base reaction by reacting with a certain volume of reactant whose concentration is known. A suitable indicator for determining the equivalence point is used to indicate the end point of an acid-base titration. To achieve accurate results, multiple titrations will be carried out until duplicate determinations agree to within 0.05mL of each other.
4. Results & Calculations:
4.1 Standardization of NaOH
Molarity of KHC8H4O4 is 0.05044 moldm-3 ( = = 0.05044 moldm-3)
Titration
1
2
3
Final volume of titrant/cm3
5.00
10.00
14.80
Initial volume of titrant/cm3
0.00
5.00
10.00
Volume of titrant used/cm3
5.00
5.00
4.80

KHC8H4O4 (aq) + NaOH (aq) KHC8H4O3 - Na+ (aq) + H2O (l)
Average volume of NaOH titrate used = ½ (5.00 + 5.00) = 5.00 cm3
No. of moles of KHC8H4O4 reacted = 0.01 × 0.05044 = 5.044 x 10-4 mol

From the equation, mole ratio of NaOH ≡ KHC8H4O4 is 1:1, No. of moles of NaOH reacted = 5.044 x 10-4 mol

You May Also Find These Documents Helpful

  • Good Essays

    6.03 Titration Lab

    • 573 Words
    • 3 Pages

    3.) Place 5mL of vinegar in a 125 mL Erlenmeyer flask. Dilute the vinegar with 25 mL of water and add two drops of phenolphthalein.…

    • 573 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    LAB 20C

    • 561 Words
    • 3 Pages

    2. To titrate an acetic acid solution with 0.50M sodium hydroxide, and determine the molarity and percentage composition of the vinegar.…

    • 561 Words
    • 3 Pages
    Satisfactory Essays
  • Better Essays

    Figure 2 shows the calculations that were used in order to determine the molarities of the NaOH, the total amount of base used, and the percent error for the molarity of the acetic acid. The titration formula used was: MaVa=MbVb.) The percent error calculated was 18.9%. (Figure…

    • 2337 Words
    • 10 Pages
    Better Essays
  • Good Essays

    The objective of the lab was to measure the % of NaCO3 in an Alka-Seltzer tablet in different measures of an acidic solution (Vinegar). Through understanding of stoichiometric relationships and limiting reactants, quantities of substances yielded or consumed in a reaction can be determined by analyzing the amount of material involved. A vinegar-water solution is employed in this experiment because a fixed amount of NaCO3 can be reacted in pure water, by manipulating the amount of vinegar in the dissolving solution, the amount of acid capable of reacting increases; resulting in a greater amount of NaCO3 reacted and greater generation of CO2. Percent by mass of NaCO3 that has reacted can be determined by using mass difference and dimensional analysis to relate the amount of CO2 produced to the amount NaCO3.…

    • 740 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Shurp!

    • 914 Words
    • 5 Pages

    In this experiment we experimented with titration. We saw the effects of titration on an acid and then on a base. The acid we used was hydro chloric acid and the base was ammonia. The acid turned pinkish red when properly titrated and the base turned clear. We used phenolphthalein as the titrate which turns red in acidic solutions and clear in basic solutions. The control aspects of this lab were the hydrochloric acid and ammonia. The independent variable was the titrate the phenolphthalein. We measured how many drops of the phenolphthalein it took to titrate the acid or the base.…

    • 914 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Blah

    • 1432 Words
    • 6 Pages

    ACID-BASE TITRATION CURVES Report Sheet Determination of flow rate Equation for conversion from time to volume: Titration of HCl pH at equivalence point volume of NaOH at equivalence point concentration of HCl volume of HCl Titration of acetic acid pH at equivalence point volume of NaOH at equivalence point volume at half-equivalence point pH at half-equivalence point Titration of Lysol weight of beaker with Lysol weight of empty beaker mass of Lysol pH at equivalence point volume of NaOH at equivalence point Titration of Liquid Plumr weight of beaker with Liquid Plumr weight of empty beaker mass of Liquid Plumr pH at first equivalence point volume of HCl at first equivalence point pH at second equivalence point volume of HCl at second equivalence point…

    • 1432 Words
    • 6 Pages
    Good Essays
  • Better Essays

    Titration Lab Report

    • 1876 Words
    • 8 Pages

    The data in the table above was used in the determination of the calculation of metal ions in the samples of both TAP and DI water.…

    • 1876 Words
    • 8 Pages
    Better Essays
  • Good Essays

    Chapter 2 Homework

    • 462 Words
    • 2 Pages

    9 Acetic acid is the active ingredient in vinegar. It consists of 40.00% C, 6.73% H, and 53.28% O. What is the empirical formula of acetic acid?…

    • 462 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Purpose: The purpose of this experiment is to observe chemical changes in common consumer products to determine if the chemicals are basic, acidic, or remain neutral when mixed with other chemicals.…

    • 812 Words
    • 4 Pages
    Good Essays
  • Good Essays

    While our ecosystem does exist, without dramatic changes, we can speak of the objects without contradicting anything in it. The existence of the ecosystem is contingent on human society, it is very important that we acknowledge that. The people that play one of the most important roles are the environmental scientists. They describe the ecosystem and in the correct management of the ecosystem, but we miss the importance of the human role in the environment if we discretely see the objects of the ecosystem as independent of the human society. Just a few years ago we had an oil spill in the Gulf of Mexico that was caused by BP Oil Company. This impacted the whole gulf coast not just the animals. They had to pay almost 8 billion dollars to businesses and families. The spill caused major damage to marine, wildlife habitats, and to the Gulf's fishing and tourism industries. Being from Louisiana I seen firsthand the effect the spill had on the gulf coast. Seafood is one of the biggest markets we have in Louisiana and we could not eat, buy, or sell anything out of the gulf. Skimmer ships, floating containment booms, anchored barriers, sand-filled barricades along shorelines, and dispersants were used in an attempt to protect hundreds of miles of beaches, wetlands, and estuaries from the spreading oil. Scientists also reported immense underwater plumes of dissolved oil not visible at the surface as well as a "kill zone" surrounding the blown well.…

    • 552 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Acid Burn Lab

    • 828 Words
    • 4 Pages

    In this experiment, a reaction between the acidic household cleaners and a standardized basic solution was used for the titration. In order to obtain standardization of the basic solution (NaOH), a specific volume of the substance was measured and diluted to an approximate concentration; the concentration of this resulting solution was then verified using titrations. Once the standardized NaOH solution was obtained, the household cleaner was first treated with a pH indicator (phenolphthalein) so that the equivalence point, the instant where exactly enough standard solution has been added to the titrand so that their molar concentrations are equal, could be seen. The equivalence point in the titrations conducted was equal to the end point, the instance at which the pH indicator changes color, which allowed the exact point of equivalence to be reached based on physical observation of the titrand. After the indicator had been added to the household cleaner being titrated, the titration was performed and the volume of NaOH required to reach the equivalence/end point was noted; the titration was then repeated twice more to ensure accuracy and precision. To determine the concentration of the household cleaner, first the volume of NaOH used to reach the equivalence point was…

    • 828 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    Unknown Acid Titration

    • 1249 Words
    • 5 Pages

    5. When back in the classroom, you will receive the correct molar mass of the acids so you can calculate the percent error.…

    • 1249 Words
    • 5 Pages
    Good Essays
  • Better Essays

    Titration Lab

    • 2835 Words
    • 12 Pages

    4. "Titration." An Introduction to Chemistry - Bishop. N.p., n.d. Web. 28 May 2010. <http://chiralpublishing.com/Bishop_Titration.htm>.…

    • 2835 Words
    • 12 Pages
    Better Essays
  • Better Essays

    Therefore, the experiment was performed to conduct quality control analysis on two commercial products to determine the amount of acid or base active in these two products and then compare the results to those of the manufacture. This was done through the preparation of standardized acid solution and standardized base solution, and through titration. The purpose of titration was to determine the concentration levels of the commercial products being used.…

    • 1661 Words
    • 7 Pages
    Better Essays
  • Powerful Essays

    Chemistry lab report

    • 1315 Words
    • 6 Pages

    The limiting reagent is acetic acid from 0-20 Ml while baking soda is the excess. When the volume of vinegar was increase, more sodium bicarbonate reacted and more CO2 was produced. The percent by mass of the reached sodium bicarbonate rose with increasing amounts of vinegar. The limiting reagent is baking soda from 25-35 ml while acetic acid is the excess. The percent by mass reacted sodium bicarbonate in the tablet increased with the amount of vinegar used and then came to a steady value. The amount of CO2 produced was the same as the quantity of sodium bicarbonate in the tablet. When the volume of acetic acid was 0, the mass of CO2 (loss of mass) is 0.68g. This was found by subtracting the total mass of beaker and contents after reaction. The mass of NaHCO3 in tablet is 1.3g. This was found by multiplying the mass of CO2 produced and molar mass NaHCO3 and then dividing that by molar mass CO2. The percent of NaHCO3 in tablet when the volume of acetic acid was 0 was 415. This was found by…

    • 1315 Words
    • 6 Pages
    Powerful Essays