OK, so I did this experiment a week ago,
I took 75g of juice and added some 1.5gKI, 7.5cm^3HCl and 5cm^3starch and titrated with Potassium Iodate 0.010M(KIO3). I did this titration again
For the third experiment, I just took 0.1g pure C-vitamin dissolved in some water instead of juice and everything the same.
But, unfortunately, I have lost my data and there is no possiblity that I can gain information from anywhere on the equivalent points of these 3 trials.
If you could just give me an idea at what volume the color would be dark blue (shud it be dark blue or pink?)
Just an idea in what range maybe?
e.g. 24cm^3 or something like that
The only thing I remember was that there wasn't a lot of difference between the eq. point in the first and the second trial...
The reaction that takes place is:
IO3 + 5I + 6H ---- 3I2 + 3H2O
I2 + c vitamin --- 2I + 'products'
REPORT DUE TOMORROW