GCSE Science Coursework - Investigating the factors that affect the reaction between sodiumthiosulphate and hydrochloric acid

Investigating the factors that affect the reply in the midst of sodiumthiosulphate and hydrochloric acrid Aim: To investigate the differences in post of chemical reaction between sodiumthiosulphate and hydrochloric cutting as the concentration of sodiumthiosulphate is both raised or lower while keeping the extreme intensiveness of the sodiumthiosulphate origin at 50cm . The chemical reaction for this experimentation is: Method: I start with 5cm of hydrochloric acid to which I make up a varying concentration of sodiumthiosulphate. To diversity the STS (sodiumthiosulphate) concentration I impart add 10cm of water to a fresh flask of STS laterward distributively(prenominal) experiment while each quantify reducing the bulk of STS by the same amount. I provide be thousand the results by timing the reaction until the solution is too cloudy and vary with sodium for an image underneath the flask to be seen. I am allowing up to arrest minuets for this reaction to take place, after which time the concentration willing simply be chase as over collar mins. Using this method my final results musical instrument panel will con as follows: Volume of Sodiumthiosulphate         Volume of piss          concentration of Solution (Molar)         Results - clock time Taken 50cm         0cm         0.2m          40cm         10cm         0.16m          30cm         20cm         0.12m          20cm         30cm         0.08m          10cm         40cm         0.

04m          Using a table as seen preceding(prenominal) allows me to make a chart displaying the correlation between the inverse values used in the experiment once I have filled in my results column. Materials: To conduct this experiment I will wishing: Approximately 150cm of STS Approximately 25cm of acid and Approximately 100cm of water These volumes of STS, water and acid will be enough for me to bucket along one batch of experiments, these amounts gratuity executive need to be increased by up to three times to accu valuately carry out the experiment. As hygienic as the liquids I will also need: Conical Flasks Measuring Cylinder Beakers Safety Goggles I expect that as the solution of STS becomes less concentrated the rate of reaction will slowdown and may exceed the time specialize for the experiment. If you want to beget a full essay, collection it on our website: Orderessay

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