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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[thereby converting all the iron to iron(II)]‚ then use a solution containing permanganate ion‚ MnO4-‚ to oxidize this Fe2+ to Fe3+ ion. The percent of iron in the sample will be calculated from the amount of permanganate needed to oxidize fully all the Fe2+ ions. A solution of permanganate ion in sulfuric acid efficiently oxidizes Fe2+ to Fe3+ MnO4- + 5 Fe2+ + 8 H+ ( Mn2+ + 5 Fe3+ + 4 H20 The permanganate ion acts as its own indicator‚ as MnO4- is highly colored while Mn2+ is essentially
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Enzyme kinetics (catalase/kmno4) Enzyme catalysis Farah Mohamed galal 22-3014 t09 Introduction: E + S → ES → E + P Enzymes are proteins which act as a catalyst in biochemical reactions(affect the rate of achemical reaction). The substrate binds to the active site of the enzyme. Any deformation of the active site will affect the activity of the enzyme‚ these are some ways that enzyme action may be affected because of them: 1- Salt concentration: If it is close to zero or very high
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Hydrogen Peroxide & Inorganic Peroxy Compounds Hydrogen Peroxide Hydrogen peroxide (H2O2) is the simplest peroxide (a compound with an oxygen-oxygen single bond). It is also a strong oxidizer. Hydrogen peroxide is a clear liquid‚ slightly more viscous than water. In dilute solution‚ it appears colorless. Reactions Decomposition Hydrogen peroxide decomposes exothermically into water and oxygen gas spontaneously: 2 H2O2 → 2 H2O + O2 This process is thermodynamically favorable. It has
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Cell Membrane Transport ZOOL 2011.19 A. Introduction: Cells are the most significant building blocks of all living things. They are also the tiniest living organisms in the human body which provides structure for the body and intake nutrients that become energy. Cell membranes control what goes in and out the cell‚ it protects it. The lipid bilayer describes the membrane of both animal and plant cells where the properties that make up phospholipids are very important
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Testing Cell Transportation Across a Membrane Introduction Cells have the amazing ability to transport certain molecules in or out of their membrane. Some require no energy to do so (passive transport) while others require energy to be processed through (active transport). There is also the transportation of water across a membrane‚ which has its own term of osmosis. Too much of something can be taken in‚ or too little enters. This especially happens to plants‚ who require water (and sun) to live
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indicator. This turns from purple to colourless while unsaturation is still present. The procedure is the same as for bromine water‚ but portions of the potassium permanganate are added with swirling until the mixture fails to produce a colourless solution. The mixture requires more and more swirling as the amount of potassium permanganate increases. Warming fats in the Volasil using a beaker of hot water helps the fat dissolve and also speeds up the reaction. This experiment should be done
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16 OBJECTIVE The objective of this experiment is to distinguish the difference between various types of hydrocarbons by performing simple tests and reactions involving hydrocarbons. EQUIPMENT AND CHEMICALS Pentene Toluene Heptane Potassium permanganate (1% KMnO4) Aluminum chloride (anhydrous AlCl3) Chloroform (CHCl3) Ligroin Br2 in CCl4 (5%) Stopper pH paper Small test tubes and rack Graduated cylinder (10 ml) Evaporating dish DISCUSSION Organic chemistry is the study of
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double bond in the products. Addition of bromine to the fractional distillate caused the bromine to discolor. The addition of bromine to 2-methyl-cyclohexanol remains brown because there is an absence of double bound (saturation). Addition of potassium permanganate caused the solution to turn slightly brown but appeared immiscible as result of the unsaturation product. When analyzing the IR results confirmed the presence of an alcohol group with a distinctive wide peak at 3400 cm-1. The presences of
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Task 3: The chemical tests used in order to carry out and collect these results are useful for the simple identification of colourless organic liquids and ones that are often found at the scenes of crime. The first test carried out was the Lucas test which was used to identify a variety of alcohols following the contribution of a given solution‚ from carrying this out I could then identify that primary and secondary alcohols were present with one tertiary alcohol also being present however despite
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