- To know if regular coke and light coke contain reducing sugars.
- regular coke
- light coke
- beakers
- bunsen burner
- test-tubes
- test-tubes rack
- Fehling A
- Fehling B
- pipet
- wighing scales
PROCEDURE:
The first test we did is about to boil the coke and every second spent there will be less and less liquid until the beaker will only contain the sugar of coke. In regular coke should be a 33% of sugar, according to the lalbel. And in light coke should disapper all the liquid.
The second test we did was the Fehling test, in which one we have to add some drops with a pipet of Fehling A and Fehling B (each one with a different pipet) and then warm it up until it changes its color into blue or orange-brown, regular coke should change into orange-brown because it contains sugars. And light coke should change into blue because it doesn't contain sugars.
We boiled the two test-tubes in the coke of the beakers to save time.
The second test we did was the Fehling test, in which one we have to add some drops with a pipet of Fehling A and Fehling B (each one with a different pipet) and then warm it up until it changes its color into blue or orange-brown, regular coke should change into orange-brown because it contains sugars. And light coke should change into blue because it doesn't contain sugars.
We boiled the two test-tubes in the coke of the beakers to save time.
