cylinder or a 5.0-mL pipet‚ transfer 5.0-mL of vinegar to a 250-mL Erlenmeyer flask. Add about 25-mL of distilled water to increasethe volume of the solution for titration. (This will not affect your results) Add 2-3 drops of the phenolphthalein indicator to the solution in the flask. Obtained a 50-mL buret and place it in a buret clamp. Using a 250-mL beaker‚ obtain about 100-ml of 0.1M NaOH solution. Recorded the Molarity (M) of the NaOH solution‚ which is 0.187M. Rinsed the buret with two 5-mL portions
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Learn about Oxidation-Reduction reactions. In this laboratory exercise‚ we will determine the Percentage Oxalate Ion (C2O42-) in our Potassium Ferric Oxalate Trihydrate (K3[Fe(C2O4)3]•3H2O) sample using a technique called Titration; a type of Volumetric Analysis. This will involve adding a Potassium Permanganate (KMnO4) solution‚ whose concentration is previously determined‚ to a solution of the Oxalate until the reaction between these species is complete. By knowing the reaction stoichiometry
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Equilibrium In your text (Chang‚ 6th Ed) : Ch. 15 Chemical Equilibrium‚ esp. Section 15.3 Purpose: The Law of Mass Action will be examined via a series of samples using the same reaction‚ but different stating concentrations. The equilibrium constant‚ K‚ for each reaction will be calculated‚ demonstrating that K for a given reaction at a fixed temperature is a constant‚ independent of starting concentrations. Background: For a general reaction aA + bB ↔ cC + dD‚ the Law of Mass Action
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Department of Chemistry University of Kentucky EXPERIMENT 5 Molecular Absorption Spectroscopy: Determination of Iron With 1‚10-Phenanthroline UNKNOWN Submit a clean‚ labeled 100-mL volumetric flask to the instructor so that your unknown iron solution can be issued. Your name‚ section number‚ and locker number should be written legibly on this flask. The flask does not need to be dry on the inside‚ but needs to have been rinsed with distilled water after it has been washed. The flask
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Experiment 5 Preparation and Standardization of Potassium Permanganate Standard Solution Purposes 1.To know the method of preparation and standardization of potassium permanganate standard solution. 2. To grasp the principle‚ the conditions and the method of permanganate titration. 3. To grasp the determination of hydrogen peroxide in hydrogen peroxide solution with permanganate method. Principle Permanganate titration with potassium permanganate solution (KMnO4) as standard solution is one of
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for a chemical reaction to occur all while utilizing an analytical tool. Procedure 1. Determination of Reaction Rates • Obtain boiled‚ deionized water‚ pipets or burets‚ and 20-mL beakers or 150 mm test tubes in order to mix solutions for 8 kinetic trials. • Make sure to measure the volumes of potassium iodide and sodium thiosulfate with pipets before adding them to the test tubes or the beakers. • For Trial #4‚ acquire
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experiment: 1. Prepare 100 ml of 0.020M acetic acid solution using the provided 2.00M acetic acid stock solution. 2. Use M1*V1 = M2V2 to calculate the volume require to make 100 ml of 0.020M acetic acid solution. 3. Pipet the required volume of 2.00M acetic acid stock solution into a 100-ml volumetric flask‚ add some (25-50 mL) distilled water and swirl to mix‚ then add enough distilled water to bring the total solution volume to the 100 mL mark. To prevent overshooting the mark‚ use a wash bottle filled
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Aitkhozha Dr.Brad Logsdon Date: 22.04.13 Purpose: The main purpose of this experiment is to standardize a solution of EDTA by titration against a standard solution made from calcium carbonate‚ CaCO3. Procedure: A 50-mL buret‚ a 250-mL volumetric flask‚ and 25- and 50-mL pipets were obtained from stockroom. The 0.5 g of calcium carbonate was weighted in a small 50-mL beaker. Approximately 0.4 g of the carbonate was transferred to a 250-mL beaker. 25 mL of distilled water was poured to the large
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The glassware that was used in the experiment was (2) 100mL volumetric flask‚ and a (1) 250 mL beaker. At the start of the experiment‚ we prepared standards of benzoic acid solutions that contained 2‚4‚6‚8‚ and 10 mg/L in 0.10M HCl‚ our group prepared the 6 and 6 mg/L standards for all the groups within the laboratory. In one of the 100mL volumetric flask it contained 6 mg/L benzoic acid + 10 mL HCl‚ then diluted to the mark on the flask with DI Water. In the other 100mL volumetric flask it
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potassium permanganate. 2. To plot the calibration curve of potassium permanganate. 3. To determine the concentration of an unknown solution of potassium permanganate. APPARATUS Beaker‚ burette‚ glass rod ‚volumetric flask 100ml ‚dropper CHEMICALS Potassium permanganate (KMnO4)‚ distilled water PROCEDURE A. Preparation of the KMnO4 standard solution 1. KMnO4 was weigh accurately to nearest mg. The reading was recorded. The solid transfer to a 100ml volumetric flask using funnel. 2. The solid
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