Difference Between Acid And Base Titration
Chemical Engineering
School of Engineering and Physical Sciences
FIRST YEAR LABORATORY REPORT
COVER SHEET
Name: Farid Mustafayev Experiment Title: Acids and Basis: Determination of Concentration Using Titration Date of Experiment:
Demonstrator: Sevda Zargarova
Supervisor: Ziyafaddin Asadov
Contents
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The experiment consisted of four main parts and in each part given acids and bases were different compared to previous one in terms of their strengths and weakness. In each reaction between the different type of acid and base we had unknown variables and to identify one of them the graph which represented dependence of pH of mixture on added substance was plotted. This graph allowed us to find out the volume of added substance in the equilibrium point. the equilibrium point of reaction is the point where the amount of base added was exactly the correct amount to have the moles of base completely react with the moles of acid and pH becomes 7 which represents neutralized environment. Since there is a 1:1 stoichiometry in the chemical reaction, as we know that for every one molecule of base that was needed to react with one molecule of acid. So the moles of bases and acids become same and as a result we can obtain equation which is given below to figure out unknown concentration of acid. C_acid*V_acid=C_base*V_base Finally, the obtained results from experiment compared with the theoretical values to sure from the punctuality of
6.03 Pre Lab
993 Words | 4 PagesQuestion3: Experiment 3 The unknown acid sample was 1 • Monoprotic Acid Trails Initial NaOH solution (mL) final NaOH solution (mL) The volume of NaOH to titrate the acid (mL) Amount of Unknown Acid sample 1 (g) The moles of the Unknown Acid (mol) Molar mass of the Unknown Acid (g/mol) A 3.38 28.31 24.93 0.150 0.0026 57.69 B 0.18 29.32 29.14 0.175 0.0029
Unknown Compound
1270 Words | 6 PagesThe unknown compound was first reacted with an acid. To begin, 0.50 grams of KCl was mixed with 5 mL of water. Then, 1 mL of 6 M H2SO4 was added to the solution. Secondly, the unknown compound was reacted with a base. Exactly 0.50 grams of KCl was mixed with 5 mL of water, and 1 mL of 1 M NaOH was added to the solution next.
Luke Skywalker Lab Report
193 Words | 1 PagesThe purpose of this experiment was to use a pH meter to graphically determine a stoichiometric point, to determine the molar concentration of a weak acid solution and the molar mass of a solid weak acid, and to determine the pKa of a weak acid. In part A of the experiment, the unknown named Luke Skywalker was used during the experiment. Throughout the experiment the experimenter collected measurements such as the number of moles of NaOH to stoichiometric point (0.00115 mol, 0.00105 mol) and the molar concentration of the unknown acid (0.046 M, 0.042 M) during part A of the experiment. During Part B of the experiment the experimenter collected buret readings of NaOH and determined the stoichiometric point and volume of NaOH dispensed. Based
Limiting Concentration Lab Report
417 Words | 2 Pages1. The first step of my calculations was finding the number of moles of CaCl2 and NaOH added in each test. The volume of CaCl2 is an increasing number with a concentration of 1.0M. The volume of NaOH is constant for all four tests, but the concentration is 2.4588M. To find the number of moles of each reactant added, volume in liters was multiplied by the molarity (concentration). 2.
Equivalence Point In An Acid-Base Titration
845 Words | 4 PagesDiscussion: End point in this acid-base titration experiment refers to the point where the chemical reaction has reached its conclusion and no additional titrant should be added. The end point of this experiment can be obtained when the indicator used changes colour. For example colourless to light pink when phenolphthalein is used and red to orange and subsequently yellow when methyl orange is used. Equivalence point, also known as stoichiometric point in an acid-base titration refers to the point where the reacting acid and base is in equal proportions. In the graph plotted, pH against volume of NaOH, the graph becomes nearly vertical at the equivalence point.
Sulphuric Acid Experiment
759 Words | 4 PagesThe temperature of the sulphuric acid was not measured throughout the experiment, however the room in which the experiment was conducted was kept constant, so the chance of any large error due to unknown temperature of the sulphuric acid was most likely reduced. The amount of sulphuric acid used was also controlled by measuring 100mL with a 100mL measuring cylinder to ensure that the results would be consistent. The volume of the agar cubes was calculated from the surface area of each agar cube, both before and after they had been in the sulphuric acid. This increased the reliability of the results as it allowed the rate of diffusion of the sulphuric acid into the agar cubes to be calculated more accurately. The concentration of the acid was 0.1M, which was placed in all three agar cubes to maintain consistency of results.
Le Chatelier's Theory
800 Words | 4 PagesINTRODUCTION The concept of chemical equilibrium was developed after Berthollet (1803) found that some chemical reactions are reversible. For any reaction mixture to exist at equilibrium, the rates of the forward and backward (reverse) reactions are equal. In the following chemical equation with arrows pointing both ways to indicate equilibrium, A and B are reactant chemical species, S and T are product species, and α, β, σ, and τ are the stoichiometric coefficients of the respective reactants and products: α A + β B ⇌ σ S + τ T
Effect Of Temperature On Amylase
1167 Words | 5 PagesControlled Concentration of amylase Amount of amylase/starch Ph of the amylase/starch The concentration of the Amylase was kept at 1% at at times throughout the experiment. 5cm3 of both will be used in each reaction. pH of the Amylase/starch will be kept the same.
Neutralization Reaction Paper
1187 Words | 5 PagesA drop of methyl red was added. Also, a 0.01M hydrochloric acid (HCl) was added in a dropwise manner from a syringe until the color of the solution matches that of the first test tube setup. The volume of the HCl used was recorded for the determination of the ionization constant of
Determination Of Ethanoic Acid In Vinegar Lab Report
1489 Words | 6 PagesThe equation of the reaction between sodium hydroxide and ethanoic acid is as follows: CH3COOH + NaOH → CH3COONa + H2O We can measure the end point of titration process and we can also measure the amount of reactants. The concentration of ethanoic acid in the vinegar can be determined through stoichiometric calculations, Using the values obtained from the titration, and also the chemical equation as a reference. Phenolphthalein indicator is used in this acid-base titration Equipment and materials:
Sodium Thiosulfate And Hydrochloric Acid Lab Report
3578 Words | 15 PagesAim: To find out the relationship between the greater concentration of sodium thiosulfate when mixed with hydrochloric acid and the time it takes for the reaction (the time it takes for the solution to turn cloudy) to take place and to show the effect on the rate of reaction when the concentration of one of the reactants change. Introduction: The theory of this experiment is that sodium thiosulfate and hydrochloric acid reach together to produce sulfur as one of its products. Sulfur is a yellow precipitate so, the solution will turn to yellow color while the reaction is occurring and it will continue until it will slowly turn completely opaque. The reaction of the experiment happens with this formula: “Na2 S2 O3 + HCL =
Acid Base Neutralization Lab Report
1001 Words | 5 PagesIV. Data and observations Mass of beaker (g) 174.01 Mass of beaker + NaOH pellets (g) 174.54 Mass of NaOH pellets 0.53 TRIAL 1 TRIAL 2 Mass of potassium acid phtalate (KHP) (g) 0.15 0.15 final buret reading (ml) 30.75
Lab Report On Acid Base Titration
1346 Words | 6 PagesPractical I: Acid-base equilibrium & pH of solutions Aims/Objectives: 1. To determine the pH range where the indicator changes colour. 2. To identify the suitable indicators for different titrations. 3.
Buffer Lab Report
1344 Words | 6 PagesThe mixture were stirred by using a glass rod until the mixture is fully dissolved. The solution were tested by using calibrated pH meter to get the pH value of the solution. Results and Discussions pH ratio between acid and base: 7.3 = 6.82 + x x = 0.48 0.48 = log ([base])/([acid]) 100.48 =base/acid salt/acid = 3.02 There, 1 acid : 3 base calculate number of mole of acid and base to find the mass : molar = mol/L 50 mM = (mol )/(0.5 L) mol = 25 mol number of mole of NaH2PO4 25/4 = acid = 6.25 mol number of mole of Na2HPO4 25/4 × 3 = salt = 18.75 mol to calculate the mass of the acid and base : Mass of NaH2PO4 (6.25 mol)/(119.98 g/mol)=0.052g
Benzoic Acid Lab Report
767 Words | 4 PagesThat caused a new initial reading of NaOH on the burette (see Table1 & 2). The drops were caused because the burette was not tightened enough at the bottom to avoid it from being hard to release the basic solution for titrating the acid. The volume of the acid used for each titration was 25ml. The volume of the solution was then calculated by subtracting the initial volume from the final volume. We then calculated the average volume at each temperature.
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