Sodium thiosulphate solution

experiment will go as follows: Into a conical flask put 15cm3 of distilled water and add 2cm3 of [X]moldm-3 potassium iodide (KI) solution and 1cm3 of 2moldm-3 sulphuric acid. Then add to this 2.5cm3 of 5vol (0.42moldm-3) hydrogen peroxide (H2O2). For the second part of my investigation, the KI solution will remain a constant 0.3moldm-3 and the H2O2 solution will vary. H2O2 + 2I- + 2H+ -> 2H2O + I2 Methods to find the rate: 1 - Use a colorimeter to monitor the change

peroxide reacts with iodide ions to produce iodine. The iodine can be detected by its colour forming a blue-black solution. The detection of the iodine can be enhanced by the addition of starch solution. The sodium thiosulphate will react with the iodine ions and when the all the sodium thiosulphate has reacted, then the remaining iodine ions will suddenly appear to form the coloured solution due to the addition of starch. I2(aq) + 2S2O32- (aq) → 2I-(aq) + S4O62- (aq) The concentrations of each of the

Rates of Reaction - Sodium Thiosulphate and Hydrochloric acid In this piece of coursework, I will study how concentration affects the rate of reaction. I will do so by timing the reaction of Sodium Thiosulphate with an acid. In this coursework, I will include background knowledge, prediction, safety, results, calculations, graphs, an analysis, conclusion and an evaluation. In my evaluation I will comment on how reliable my results were and how I could have improved my coursework in any possible

reactant or the rate of formation of a product during a chemical reaction. We are studying the affect of changing concentration of Na2S2O3 Solution and dilute HCl. I believe these variables will affect the rate of reaction: · Surface area · Pressure · Temperature · Catalyst · Concentration Concentration ============= If the concentration of a solution is increased there are more reactant particles per unit volume. This increased the probability of reactant particles colliding with each

Reaction Rate 16/01/2017 Aim: To investigate the effect of the concentration of Sodium Thiosulfate and Hydrochloric Acid and to determine the rate of the reaction. Introduction: Different reactant have different rate on reaction. Some may occur in a sudden; some can take hours to react. This experiment is to investigate how the reactant concentrations have an effect on the reaction rate. The reaction equation of Sodium Thiosulfate and Hydrochloric Acid: 2HCl(aq) + Na2S2O3(aq) 2NaCl(aq)

The Factors Controlling the Rate of the Sodium Thiosulphate and Acid Reaction Planning I am investigating the factors controlling the rate of thiosulphate / acid reaction. The reaction that will be taking place will follow the rate at which sulphur is formed in the reaction of sodium thiosulphate with dilute hydrochloric acid. In the experiment the sulphur will appear as an extremely fine precipitate. This will slowly be followed by a milky appearance in the reaction

treated with an excess of Wij's iodine solution which a solution of iodine monochloride (ICl) in glacial acetic acid. The iodine concentration is then determined by titration with sodium thiosulfate. Iodine value is the average unsaturation measurement in fat sample. Although iodine value is expressed as the weight of iodine added to 100 g of sample, the analytical procedure used to determine the iodine normally use iodine monochloride in acetic acid solution (Wijs’ reagent) as halogenations agent

Potassium permanganate is an inorganic compound which is a salt because it has k+ and MnO4- ions. The oxidizing ability of this compound is very strong and it dissolves in water to produce very dark purple solution. Potassium permanganate was formerly known as Condy’s crystals because the solution in water would evaporate to give prismatic crystals of a purple/black colour that glistened. How the Rate of Reaction Varies: Temperature: According to the collision theory, every reaction has a minimum

Introduction: Investigations into the mechanics of chemical kinetics can reveal invaluable information relating to the rates of reaction. There are numerable applications of reaction rates, knowledge in this area is pivotal for industrial, commercial and research sectors. Thus, allowing them the ability to manipulate a variety of factors of chemical reactions with the use of reaction rates. In the scope of the kinetics of clock reactions, there is a range of information that can be obtained about

Investigations into the mechanics of chemical kinetics can reveal invaluable information relating to the rates of reaction. There are numerable applications of reaction rates, knowledge in this area is pivotal for industrial, commercial and research sectors. Thus, allowing them the ability to manipulate a variety of factors of chemical reactions with the use of reaction rates. In the scope of the kinetics of clock reactions, there is a range of information that can be obtained about reaction rates