The Kinetocs Experiment of Iodide Ions and Persulphate Ions.
9673 WordsNov 4, 201239 Pages
The catalytic effect of D-block ions and the kinetics of reactions iodine clock reaction:
By Stephen Parsons 6K2
Centre number: 61813
Candidate number: 8270
Table of Contents My aim and my reaction: 3 Rate of reaction: 4 Activation enthalpy: 5 Collision theory: 6 The effect of temperature on reaction rate: 7 The effect of concentration on reaction rate: 7 The effect of a catalyst on reaction rate: 8 D-block elements: 9 The effect of extra kinetic energy (from stirring etc.): 10 Where do we use D-block ion catalysts? 10 Arrhenius equation: 12 Orders of reaction: 10 Oxidation states of D-block ions: 13 Electronic configuration and transition metals: 13 Experiment: 13 Method: 14 Risk assessment: 15 How to make my standard…show more content…
The temperature affects most reactions and increases there rates unless the reaction uses an enzyme that only is effective up to or down to a certain temperature. This change has this effect because it increases collision rate and speed so more collisions with the correct reaction energy occur so more successful collisions occur increasing the reaction rate.
The pressure is an important factor in gas reactions because the gas concentration is proportional to pressure.
The use of a catalyst affect reaction rate by lowering the reaction enthalpy making the proportion of successful collisions higher.
Surface area of reactants is a key variable because a higher surface area provides a higher chance of 2 reactants colliding and producing a successful reaction.
I just talked a lot about activation enthalpy I will now explain what is meant by this. Activation enthalpy is the minimum amount of kinetic energy required by a pair of colliding particles for a reaction to occur. it is the amount of energy required for the particles of the reactants to break the bonds holding them