Reaction Kinetics

1.0 Aim To investigate the rate of chemical reply of peroxydisulphate/persulphate ions, S2O82- with large home plate of single at a number of temperatures between 5?C to 35?C and to instruct the activation energy, Ea of the reaction by using the Arrhenius Equation and plotting the graph of ln time against 1/ coercive temperature. The excess of iodide ions implies that the rate of reaction only depends on the minginess of the persulphate ions. 2.0 Introduction Persulphate ions, S2O82- is a very powerful oxidising promoter. any(prenominal) of the compounds that contain these ions ar sodium persulphate Na2S2O8, potassium persulphate K2S2O8 and ammonium persulphate (NH4)2S2O8. This oxidisng agent is capaciously use in manufacture industry. For example, sodium persulphate is employ as a bleach and detergent component whereas potassium persulphate is used as a food additive and in vibrissa dye. The wide usage of persulphate ions makes it important to understand the prop erties. The persulphate compounds are square(a) at room temperature and has melting point above atomic number 6?C. They are withal soluble in water. The reaction of persulphate ions with iodide ions which scientifically called the iodide quantify reaction is used to investigate the chemical energising of the reaction.

By conducting the experiment the activation energy, Ea which is the minimum energy unavoidable to mother a chemical reaction can be determined. crafty the Ea is important in erect to control a constitution such as the temperature required for a reaction to propose place within a specific ti me. For example, if the reaction is low, gun! can be added to speed up the reaction. This would also uphold the manufacturing company to reduce the costs of operation. 3.0 Theory The point of the experiment is to determine the Ea of the reaction of persulphate ions with iodide ions. The equation of the reaction is shown on a lower floor: S2O82-(aq) + 2 I-(aq) 2 SO42-(aq) + I2(aq) (1) Meanwhile, the rate law can be written as shown below:...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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