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Rate of reactions - Sodium thiosulohate.
Member rating: No Rating | Words: | Submitted: Sat Aug 30 2003
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Rate of reactions - Sodium thiosulohate. Planning: (a) Introduction: The aim of this experiment is to find how long a reaction between sodium thiosulphate and hydrochloric acid will take by altering the concentration of one of the reactants, in this case sodium thiosulphate. (b) Apparatus: (i) 3 conical flasks. (ii) 50cm cubed measuring cylinder. (iii) 100cm cubed sodium thiosulphate solution of concentration (1mol /dm cubed). (iv) 50cm cubed of hydrochloric acid of concentration (0.1mol / dm cubed). (v) Distilled water. (vi) Stop watch. (vii) White paper with a black cross marking. (c) Method: (i) Put about 18cm cubed of sodium thiosulphate concentration 1mol /dm cubed in a 50cm cubed measuring cylinder. (ii) While still in the measuring cylinder, add care fully 12cm cubed of distilled water until the total mixture of sodium thiosulphate and water is 30cm cubed. (iii) Take the 30cm cubed of sodium thiosulphate and water and add it into an empty clean conical flask. (iv) Wash the 50cm cubed measuring cylinder...
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