Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
How does the Activation Enthalpy and the Rate of Reaction vary with the Concentration of Reactants, Catalysts, and the Presence of Different Catalysts?
Member rating:
(7 votes)
| Words:
| Submitted: Thu Jul 11 2002
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
How does the Activation Enthalpy and the Rate of Reaction vary with the Concentration of Reactants, Catalysts, and the Presence of Different Catalysts? Aim To use the iodine clock experiment to test the benefit of some of the transitional metal catalysts and to explain how they work. The iodine-clock reaction. In this the oxidation of iodide ions to iodine molecules occurs, which are soluble in water and will show up as a pale brown colour. However, if starch is added to the reaction mixture the colour change is to a dark-blue colour, this is because the starch molecules form a complex with iodine. The reaction can be represented by the following half-equation: Equation 1 2 I-(aq) I2 (aq) + 2 e- E /V = +0.54 There is a range of oxidation agents available to carry out this reaction. In fact, almost all transition metal ions may possibly be used to oxidise iodide ions. A look through...
Get instant access
- Instant, unlimited access to our documents in full
- Swap your work for free access, or pay £4.99
- To see the full version of this document and 147,309 others
Receive email updates for this category
- Simply tell us your email address and receive a weekly Study Help Email for FREE
- Receive 3 FREE essay views with each email
- Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk
