Hi i really need help
the teacher gave use the results but left us to work out the vitamin content of juice mg/cm-3
Im testing how much fruit juice is needed to turn DCPIP colourless
The teacher gave us the first result to help us work out the thing im stuck on but its still not helping
The results are below
Juice Avergae volume required to turn Vitamin content of
DCPIP colourless cm3 juice mg/cm-3
Grapefruit 1.61 3.8
Pinapple 11.56 ?
Orgne juice 2.12 ?
Lemon Juice 1.73 ?
I would be so grateful if you could help me out
Could you tell me how to work it out
Vitamin C -core Practical watch
- Thread Starter
Last edited by S444NDP; 16-01-2010 at 12:05.
- 16-01-2010 11:47
- 17-01-2010 03:16
There should be a link between the mass of vitamin C and the volume of DCPIP used to oxidise the Vit C. This should have been done as a control titre using a known mass of vit c in a solution
Lets just say for sake of example that the link is of DCPIP to 10mg of Vit C
So Orange juice will therefore be of Vit C reacing with DCPIP
Hope that helps. I did this for my A2 Chemistry coursework