the cataylst used in dissasociation of h2o2
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Answer:
The catalytic decomposition of hydrogen peroxide provides a range of project opportunities of varying length and complexity. This is because of the variety of catalysts that will increase the rate of decomposition and the methods that can be used to monitor the reaction:
2H2O2 → 2H2O + O2
Using an enzyme catalyst
In many living organisms hydrogen peroxide is a product of metabolism that must be broken down, since in appreciable concentrations it is toxic. The rate of decomposition is increased by the intra-cellular enzyme catalase.
As a fairly simple project you could compare the effectiveness of the enzyme from different sources such as potato, celery and liver. This might lead you on to a more thorough investigation of other factors that affect the activity of the catalase, including, perhaps, temperature, pH, concentrations of substrate and enzyme and the presence of enzyme inhibitors.
Such experiments may at first sight seem quite straightforward, but as you try to interpret your results you will be led into quite complex, but very interesting, aspects of chemical kinetics and reaction mechanisms.
Using an inorganic catalyst
As an interesting contrast, a similar increase in the rate of decomposition of hydrogen peroxide can be achieved using an inorganic catalyst such as manganese(IV) oxide or lead(lV) oxide.
You could set out to look at how factors such as concentration of the peroxide, amount of the catalyst and temperature affect the rate of the decomposition. Experiments of this kind could lead you towards a possible reaction mechanism and towards the calculation of the activation energy involved.
please you will understand
