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Rate of Reaction sodium thiosulphate

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  • Essay length: 1401 words
  • Submitted: 30/11/2008
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International Baccalaureate Chemistry

The first 200 words of this essay...

Rate of Reaction Investigation with Sulphuric acid and Sodium thiosulphate

Aim: The aim of this is investigation is evaluating an aspect that affects the rate of reaction between sodium thiosulphate and sulphuring acid reaction.

Hypothesis: I predict that when the concentration of sulphuric is increased and all volumes are kept the same, the rate of reaction for the reaction will increase because increasing the concentration of a reactant increases the rate of the reaction. There are more collisions as there are more particles in closer proximity when higher concentrations are present.

Variable

What factors?

How they will be controlled

Independent

The amount of time taken between the changes of concentrations of sulphuric acid.

Different concentrations of Sulphuric acid will be observed by diluting it with water in a 10ml measuring cylinder. Concentrations are changed for every 0.2 M concentrations.

Dependent

The amount of time for the reaction to take place until the marked cross disappears due to the cloudy being formed.

The stopwatch will be started once the sulphuric acid is added immediately to the sodium thiosulphate.

Controlled

Temperature

Pressure

Catalyst

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