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The rate of reaction of sodium thiosulpahte and acid.
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Chemistry coursework: Plan Scenario When sodium thiosulphate reacts with an acid, a precipitate of sulphur forms. I am investigating one of the factors affecting the rate of reaction between sodium thiosulpate and hydrochloric acid. In this case I will investigate the concentration. Hypothesis The rate of reaction should vary as different amounts of sodium thiosulpahte and acid is added. I think that increasing the concentration of reactants will increase the speed of the reaction. Equation for the Reaction Na S O + 2HCl-->2NaCl +S+H O+SO Background Information Concentration Foe chemicals in solution, the concentration can be the number of grams of solute per litre of solution. For a reactant chemical, which is a gas, the concentration means the pressure of the gas. So increasing the pressure of reactant chemicals, which are gases, increases the rate of reaction. For example, in a dilute acid solution here are not so many acid particles. This means that there is little chance of...
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