Sodium thiosulphate solution

Experiment 1 : Redox Titration Using Sodium Thiosulphate Abstract This experiment is to determine the concentration of oxidizing solution using the iodine/ thiosulphate titration where the reducing solution is potassium iodate solution and the oxidizing solution is sodium thiosulphate solution. Potassium iodate solution which is an oxidizing agent is added into an excess solution of acidified potassium iodide. This reaction will release iodine. Potassium iodide is acidified with sulphuric acid

Reaction Rates of Sodium Thiosulphate and Hydrochloric Acid at Various Concentrations Introduction/ plan ------------------ I am experimenting into the reaction rates of Sodium Thiosulphate and Hydrochloric acid when under different concentrations. Both Sodium Thiosulphate and Hydrochloric acid are clear solutions but when they react together they produce a cloudy solution, the solution become so cloudy you cannot see through it. To measure the rate of reaction I am going to print

(HCl) and Sodium Thiosulphate (Hypo solution). There are multiple ways to test the rate of reaction between two substances, however the experiment we will be conducting involves placing a conical flask directly over a black coloured ‘x’ and recording the time it takes for the ‘x’ to become invisible after the two solutions react with each other. This is simple and direct as multiple tests can be undertaken at different concentration levels and multiple temperatures. Sodium Thiosulphate and Hydrochloric

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

Supersaturated Solutions Lab Purpose: The purpose of this lab was to see the differences between unsaturated, saturated, and supersaturated solutions. Brief Background: The concepts used in this lab are solutions and solubility. Within a solution there is a solvent and a solute. In this lab, the solvent was the distilled water and the solute was the sodium thiosulphate pentahydrate. Within each test tube we dissolved sodium thiosulphate pentahydrate with water to create a solution which was either

Investigating Reaction Rates of Sodium Thiosulphate and Hydrochloric Acid Aim: To investigate the rate of reaction of Sodium Thiosulphate and Hydrochloric acid. In this investigation I will be varying the concentration of Sodium Thiosulphate only and not the Hydrochloric acid concentration. In this investigation I will use the following word equation: Sodium Thiosulphate + Hydrochloric acid In this investigation I will use the following symbol equation:

Title: The effect of Hydrochloric Acid volume with Sodium Thiosulphate on the reaction rate. Introduction: Research Question: How does changing the volume of Hydrochloric Acid on Sodium Thiosulphate effect the time taken for the ‘X’ Mark to dissapear? The rate of a chemical reaction is the time required for a given quantity of reactant to be changed to product. The unit of time may be seconds, minutes, hours, days or years. For a chemical reaction to occur it needs to have a collision, and it is

The effect of temperature on rates of reaction Aim: The aim of this experiment is to find out if the reaction rate of sodium thiosulphate solution and hydrochloric acid will be affected by a temperature change. Prediction: I predict that as a result of increasing the temperature of the sodium thiosulphate, the rate of reaction will be faster. Because of the increase in temperature, the particles will gain more kinetic energy. This will therefore cause them to move faster and produce more successful

Effect of Temperature on a Chemical Reaction In the experiment, my partner and I will be conducting small tests multiple times to determine what effect temperature of a solution can have of the speed of a reaction. Heating up sodium thiosulphate in a water bath will alter the temperature of the solution. The sodium thiosulphate will then be added to room temperature hydrochloric acid, and using a stopwatch, we will record how long each reaction takes. My partner and I have decided to do the 90 degrees

Preparation of Standard Volumetric Solutions 1. 0.1N Sodium thiosulphate solution Reagents: Sodium thiosulphate crystals, Potassium dichromate (primary standard NIST certified), Sulphuric acid, Potassium iodide , Starch Solution (1%): Weigh 1g of soluble starch and mix it with 100ml of boiled water. Procedure • Weigh 25 g of sodium thiosulphate crystals and transfer it in a 1000 ml volumetric flask. • Dissolve it in minimum amount of distilled water and make up the volume to 1000 ml. Standardization