Effect of temperature on rate of reaction :: GCSE Chemistry Coursework Investigation

Effect of temperature on rate of reaction extendTo find out if the temperature increases the rate of reaction of twochemicals.PredictionMy divination is that the higher the temperature is the faster therate of the reaction will be.EquipmentHot piddle, thermometer, flask, cold water, stopwatch, tissue paper,paper with X key outed on it, safety glasses, meter cylinder, largebeaker, atomic number 11 thiosulphate, hydrochloric acid.MethodThe experiment has to be done five more or less condemnations for the five differenttemperatures of the sodium thiosulphate. The temperatures are 20C,30C, 40C, 50C and 60CTo start the experiments get together the flask with 50cm of sodiumthiosulphate into the large beaker. Fill the large beaker up with thewater of objurgate temperature that is required for the experiment. Putthe thermometer into the flask with sodium thiosulphate and check thetemperature is right for the experiment. If the water is too cold, inthe large beaker spud in some mo re hot water or if it is too hot pourin some cold water to reach the required temperature for the sodiumthiosulphate. Once the sodium thiosulphate is the right temperature,take it out of the water, wipe the butt joint of the flask with tissuepaper and place it onto the piece of paper with X marked on it. Nowmeasure 5cm of hydrochloric acid in the touchstone cylinder. Then pourthe hydrochloric acid into the sodium thiosulphate, at this momentstart timing with the stopwatch and keep timing until you cannot seethe X mark through the liquid. Make sure you wear safety glasses and make out the acid carefully.Fair TestTo make this investigation fair you throw away to make sure you use the sameconcentration of hydrochloric acid for each experiments. You also haveto make sure you use the same quantity of hydrochloric acid and sodiumthiosulphate for all the experiments. Also make sure you time theexperiments accurately.ObservationMy observation was that when the temperature of the sodium thiosulphate was higher the solution turned obscure quicker.Results--------------------------------------------Temperature (C) Time for cross to disappear (minutes) 20 2.49 30 1.