Redox Titration Analysis of a Commercial Bleach Purpose To perform a redox titration. To determine the amount of hypochlorite ion present in commercial bleach. Introduction Many commercial products‚ such as bleaches and hair coloring agents‚ contain oxidizing agents. The most common oxidizing agent in bleaches is sodium hypochlorite‚ NaClO (sometimes written NaOCl). Commercial bleaches are made by bubbling chlorine gas into a sodium hydroxide solution. Some of the chlorine is oxidized
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1.2 THE PREPARATION AND STANDARDIZATION OF NaOH AND HCL SOLUTION AIMS & OBJECTIVES: (1) To gain experience with titration procedure (2) To learn to standardize acid & base solution (3) To carry out the preparation of solution of a desired concentration (4) To carry out the preparation of solutions of desired concentration from more concentrated solution INTRODUCTION: Titration is a convenient quantitative method for accurately determining unknown concentrations of solutions. A necessary requirement
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Potentiometric Titration of Sodium Carbonate Otieno O. Victor University of Detroit Mercy Quantitative Analysis Lab CHM 3880 Fall 2011 Partner: Edwin Gay Abstract The PH at each point during the titration of sodium carbonate unknown sample was determined. An Unknown sample of Na2CO3 was titrated with a standard HCL solution. In addition to titration‚ the pH at each point of titration was measured using PH meter. The % of the unknown Na2CO3 was 25.83% Introduction1 The purpose of this experiment
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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 the oxidation-reduction titration methods. KMnO4 is a vigorous oxidant in an acidic solution‚ and its electrode reaction and standard electrode potential
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Heather iLab‚ Week #5 UNKNOWN ACID AND BASE TITRATION Introduction The purpose of the week 5 ilab is to describe the principles of pH measurements and predict the corrosion tendencies of solutions based on pH. It is to determine the concentration of an unknown acid by using the chemistry of the acid-base titration to calculate the concentration of the unknown acid. In order to calculate the concentration of the unknown acid you have to use a pH indicator‚ which will change color based on the pH
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determining the concentrations of other solutions to an extremely high accuracy. They are typically used in titrations and other analysis techniques as standardization solutions. A secondary standard solution‚ such as HCl solution‚ is a solution which must be standardized first against a primary standard‚ but afterwards‚ it will be stable enough for titrimetric work (Titration). Titration involves the gradual addition of a solution of accurately known concentration (standard solution) to another
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readjusted. Then‚ with the stirrer plate turned on‚ the HCl solution was titrated until it became a pale pink color that lasted at least 30 seconds. Once the titration was completed‚ the final burette reading was recorded. Afterwards‚ this process was repeated two more times‚ starting out with refilling the burette and ending with completing the titration and recording the measurements. Lastly‚ the moles of NaOH‚ moles of HCL‚ molarity of HCL‚ and average molarity for the three samples were calculated and
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EXPERIMENT 5 REDOX TITRATION: TITRATION USING SODIUM THIOSULPHATE Objectives 1. 2. To prepare a standard solution of potassium iodate for use to determine the concentration of sodium thiosulphate solution accurately. To acquire the proper techniques of carrying out a titration. Introduction Redox titrations using sodium thiosulphate as a reducing agent is known as iodometric titration since it is used specifically to titrate iodine. The reaction involved is: I2 + 2Na2S2O3 I2 + 2S2O322NaI + Na2S4O6
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pH probe was very close in its measurements‚ as the 4.01 ± 0.01 buffer was measured to have a pH of 4.01 ± 0.01‚ and the 7.00 ± 0.01 buffer was measured to have a pH of 6.87 ± 0.01. After the calibration‚ the samples of water were prepared for titration. The digital titrator had to be installed in the following manner. A syringe of 1.6 ± 0.1 N H2SO4 was attached to the digital titrator‚ by sliding it into a notch on the apparatus‚ and the plunger of the digital titrator was shifted until it met
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Introduction: Calcium hydroxide is a soft white caustic powder used in making mortar‚ cements‚ calcium salts‚ paints‚ and petrochemicals. It is also used in saltwater aquaria to make up kalkwasser/limewater solutions for reef tanks‚ and is used as a pH regulating agent. Notice that calcium hydroxide is divalent and thus has twice the neutralizing power as molecules like NaOH that are monovalent. A Calcium Hydroxide Molecule: Calcium hydroxide is manufactured industrially by adding
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