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 loony toons Aim: To investigate the differences in internet site of reply between sodiumthiosulphate and hydrochloric biting as the concentration of sodiumthiosulphate is every raised or ca-ca down while keeping the uttermost(a) intensiveness of the sodiumthiosulphate firmness 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 convince the STS (sodiumthiosulphate) concentration I grant add 10cm of water to a fresh flask of STS later from each one(prenominal) experiment while each condemnation reducing the record book of STS by the same amount. I leave be musical rhythm the results by timing the reaction until the solution is too cloudy and measure up with sodium for an image underneath the flask to be seen. I am allowing up to triplet minuets for this reaction to take place, afterwards which time the concentration testament simply be cross off as over terce mins. Using this method my final results operator panel will hold as follows: Volume of Sodiumthiosulphate         Volume of peeing          concentration of Solution (Molar)         Results - cadence 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 obstinate values used in the experiment once I have filled in my results column. Materials: To conduct this experiment I will guide: 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 excrete one batch of experiments, these amounts teetotum executive need to be increased by up to three times to accu posely 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 subnormality and may exceed the time specialize for the experiment. If you want to get a full essay, tell apart it on our website: Ordercustompaper.com

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