Reaction Rates of Sodium Thiosulphate and Hydrochloric Acid Essays

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 off a cross from the computer onto a piece of paper, place it under the beaker with the solution in it and record the time taken for the cross not to be visible. The Symbol equation for my experiment is: Na S O (aq) + 2HCl (aq) 2NaCl (aq) + H O (l) + S (s) + SO (g) The Word equation for my experiment is: Sodium Thiosulphate + Hydrochloric Acid Sodium Chloride + Water + Sulphur + Sulphur Dioxide Equipment --------- Below is a list of the equipment I will be using throughout my experiments: * Computer draw crosses * 400ml Beakers to put solution in * 20ml beakers to place hydrochloric acid, sulphuric thiosulphate and water in * Measuring Cylinders * Pipettes to measure liquids accurately * Thermometers to check temperature is constant * Stop Clocks to record rate of reaction * Paper towels to dry equipment To make all of my experiments fair I will keep some factors the same: * The volume of solution - 40cm * The volume of hydro...