Salma Ahmed
English Lit. GCSE Student
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Investigate the principal factors that affect the rate of reaction between Sodium Thiosulphate and hydrochloric acid.
- Words:
- 1180
- Submitted:
- Fri Apr 16 2004
Have a little read: ... Rates Of Reaction Coursework Aim: To investigate the principal factors that affect the rate of reaction between Sodium Thiosulphate and hydrochloric acid. Theory: The reaction between sodium thiosulphate solution and dilute hydrochloric acid: HCl+sodium thiosulphatesodium chloride+sulphur dioxide+sulphur+water. HCl(aq) + Na2S2O3(aq) NaCl(aq) + SO2(g) + S(s) + H2O(l) The sulphur formed in this reaction makes the colourless solution go cloudy. The reaction is usually carried out in a flask placed on a piece of white paper which has a black cross on it. At the beginning of the reaction, the cross can be seen easily. As the flask becomes more and more cloudy, the cross gets harder to see. Factors which affect the rate of reaction: * Increasing the temperature of a reaction increases the rate of a reaction. At the higher temperatures reactant particles move faster and collide more often and more violently. For every 10?c rise in temperature, the rate of reaction doubles. * Increasing the concentration of reactants increases the rate
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