potassium permanganate (KMnO4) solution by finding its absorbance through the use of spectrophotometer. The preparation of four known concentration of KMnO4 was done namely‚ 2.00×10-4M‚ 1.50×10-4M‚ 1.00×10-4M‚ 5.00×10-5M‚ respectively and is to be place on the spectrophotometer with the unknown and distilled water for the determination of each concentration’s absorbance. As the concentration is proportional with the absorbance of the solution‚ to determine the concentration of the solution is possible by
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EXPERIMENT 2: SOLUTION PREPARATION AND STANDARDIZATION Submitted by Iris Olaso ______________________________________________________________________________ INTRODUCTION Generally‚ there are two ways in preparing a solution‚ one is by dissolving a weighed amount of solid in a required solvent and the other is by dilution of a concentrated solution into the desired concentration. In diluting concentrated solution‚ the concentration of the diluted solution can be determined by standardization. To standardize
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how to standardize a Sodium Hydroxide (NaOH) solution by titrating it with pure sample of Potassium acid Phthalate (KHC8H4O4). This experiment has two sections. The first section is to standardize the Sodium Hydroxide by titration. Three sample of 0.7 – 0.9 g of solid KHP are place into each of the three numbered Erlenmeyer flasks. 50 ml of distilled water are added to each three of it from graduated cylinder and constantly shake it until the KHP solution are completely dissolve. 2 drops of phenolphthalein
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Preparation and Standardization of a Sodium Hydroxide Solution Objective/Purpose: The objective of this experiment will be the standardization of sodium hydroxide using potassium hydrogen phthalate by the titration method. Introduction: The concentration of solutions can be reported in terms of molarity and normality. Molarity is equal to: HCL‚ HBR‚ H2SO4‚ HNO3 M = mol Solute (mol) (Monoprotic) (Diprotic) _______________ V(L)g solutions (L) M =
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Title: Standardization of KMnO4 solution Objective: To find out the molarity of the KMnO4 solution Chemical principle: Potassium permanganate is a strong oxidizing agent. It dissolves in water to give intense purple solutions. It reacts with reducing agents and gives colourless Mn2+ ions. So the solution itself acts as the indicator for the titration‚ the end point is noted when the first permanent pink colour appears. The sulphuric acid is used as a catalyst for the reaction. The oxalic
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11/24/11 Iron Complex Lab Purpose: Be able to tell the difference between iron (II) and iron (III) solutions by performing redox reactions between irons oxidation states. Materials: test tube rack 6 test tubes- 25 x150 mm 25 mL graduated cylinder 6 stoppers 6 mL distilled water 6 mL Iron (III) chloride solution (0.02M FeCl3 x 6H2O) 6 mL Iron (II) sulfate solution (0.02M FeSO4 x 7H2O) 1 drop Potassium ferricyanide solution(0.1M K3Fe(CN)6) 1 drop Potassium ferrocyanide solution(0.1M K4Fe(CN)6
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Assignment 3.4 Part F – The Reaction of Iron Nails with a Copper Solution Introduction: The experiment in this activity involves the reaction between a copper (II) chloride solution with iron nails and the mole ratios involved in the reaction. Measurements are taken to determine the moles of each reactant involved in the reaction and thus the number of atoms or molecules involved. Apparatus and Materials: Refer to the reaction of iron nails with a copper solution assignment in Module 3‚ Section assignment
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Results and Discussion Potassium permanganate‚ KMnO4‚ is widely used as an oxidizing agent in volumetric analysis. In acid solution‚ MnO4- ion undergoes reduction to Mn2+ ion as shown in the equation: 8 H+(aq) + MnO4-(aq) + 5e- → Mn2+(aq) + 4 H2O(l). Since the MnO4- ion is violet and the Mn2+ ion is nearly colorless‚ the end point in titrations using MnO4- as the titrant can be taken as the first permanent pink color that appears in the solution being titrated.1 The number of moles of potassium
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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 the oxidation-reduction
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also in by nature format. 2. Answer the following questions: • • What are the total production costs in December? What effect did the production and put in use of the printing machine for own use have on the profit of the current year? 1FU251 Solution - Exercise I Income statement (expenses classified by nature) Revenue 360 000 Material consumed (500 000) Wages expenses (100 000) Depreciation expenses (35 000) Marketing expenses (80 000) Change in inventory Work performed by entity and capitalized
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