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Dehydration of sugar by sulfuric acid

In this practice we will work with the quantity used to measure a chemical reaction curious observe how quickly the sulfuric acid dehydrates the sugar and converts it into charcoal. As also shows a lot of gas, coal would get full of air bubbles, so much the volume increases.

Keep in mind the precautions in the treatment of hazardous substances, in this case sulfuric acid. This acid is very dangerous, because it is toxic and very corrosive, so there be treated carefully.

We will also consider the release of noxious fumes, so this reaction is carried out in fume cupboard. The reaction that takes place is: C

H 12 O 22 11 (s) + 11 H 2 SO 4 (aq) -> 12 C (s) + 11 H 2 SO 4 + 11 H 2 O (g)

The amount of commercial sugar we're going to use need not be very accurate.

The reaction is highly exothermic (gives off much heat.)


MATERIAL

2 Beakers 50 ml graduated cylinder 100 ml, stirrer, fume.

Products:
sulfuric acid (H 2 SO 4 ), commercial sugar.

PROCEDURE Fill

third part of a beaker of 50 ml with sugar. place it in the fume cupboard or well ventilated place. Measure with the probe
25 ml of concentrated sulfuric acid and add it to the first glass. Shake
with the stirring rod until well blended.
Remove the dipstick and see what happens.