Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
The Determination of a Rate Equation.
Member rating: No Rating | Words: | Submitted: Mon Dec 15 2003
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:
A2- Assessed Practical 12 The Determination of a Rate Equation Jared Ching Planning: Background: When adding 50cm3 of Na2S2O3 to 5cm3 of HCl, there is a gradual colour change from transparent to a thick cloudy yellow colour. The yellow colour is a result of sulphur (S) forming: Na2S2O3 + 2HCL S + SO2 + 2NaCl + H20 The investigation is about the effect of changing the concentration of the respective solutions and find out the effect this has on the rate of the reaction. When hydrochloric acid is in excess to the sodium thiosulphate, the reaction may be different to when sodium thiosulphate is in excess. This will show the effect of concentration on the rate of reaction. We know that the reaction changes colour and eventually becomes so cloudy that it is like a solid, where no light can pass through it, this will be due to sulphur molecules becoming abundant in...
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 151,744 others
