22-02-2013, 02:19 PM
CATALYTIC OXIDATION REACTION
Theory :
The reaction can be made to take place by the use of a suitable
catalyst which lowers the activation energy of the reaction by
providing an alternative new pathway.
Catalytic processes are involved in various industrial processes.The
reaction is an oxidation of the tartrate ion (proper name is 2, 3-
dihydroxybutandioate ion) to carbon dioxide gas and the
methanoate ion. Hydrogen peroxide oxidises the tartrate ion very
slowly if there is no catalyst, even at elevated temperatures.
Procedure :
1. Weigh 4 g of the potassium sodium tartrate into a 250 cm3
beaker. Add 50cm3 of distilled water. Put the beaker on the tripod
and gauze.
2. Heat the mixture in the beaker to about 80°C, stir to dissolve the
solid.
3. Add 20 cm3 of hydrogen peroxide solution to the solution in the
beaker. Check the temperature, warm to 80°C if necessary.
4. Note any signs of reaction.
5. Add 5 cm3 of cobalt (ll) chloride solution to the mixture in the
beaker.
Result : Co(II) acts as a ____________________ in the reaction.
Theory :
The reaction can be made to take place by the use of a suitable
catalyst which lowers the activation energy of the reaction by
providing an alternative new pathway.
Catalytic processes are involved in various industrial processes.The
reaction is an oxidation of the tartrate ion (proper name is 2, 3-
dihydroxybutandioate ion) to carbon dioxide gas and the
methanoate ion. Hydrogen peroxide oxidises the tartrate ion very
slowly if there is no catalyst, even at elevated temperatures.
Procedure :
1. Weigh 4 g of the potassium sodium tartrate into a 250 cm3
beaker. Add 50cm3 of distilled water. Put the beaker on the tripod
and gauze.
2. Heat the mixture in the beaker to about 80°C, stir to dissolve the
solid.
3. Add 20 cm3 of hydrogen peroxide solution to the solution in the
beaker. Check the temperature, warm to 80°C if necessary.
4. Note any signs of reaction.
5. Add 5 cm3 of cobalt (ll) chloride solution to the mixture in the
beaker.
Result : Co(II) acts as a ____________________ in the reaction.