Dissolve 0.1gm if dextrin in 2cc if water. To this dilute solution in a test tube, add 2 drops of molischs reagent and shake. Carefully pour 2cc o conc H2SO4 down the side of the tube and allow to stand for 2 minutes
State your observations
Based on the given information, the following observations can be made:
1. Upon dissolving 0.1gm of dextrin in 2cc of water, the dextrin should dissolve completely, resulting in a transparent or slightly cloudy solution.
2. After adding 2 drops of Molisch's reagent and shaking the solution, a color change may occur. Molisch's reagent is commonly used to test for the presence of carbohydrates, and it reacts with the dextrin in this case to form a purple or reddish-brown color.
3. The careful addition of 2cc of concentrated H2SO4 down the side of the test tube may cause some bubbling or fizzing due to the reaction between the acid and any remaining dextrin or other organic compounds present.
4. Allowing the solution to stand for 2 minutes after adding the conc. H2SO4 may result in further color changes or the formation of precipitates. These changes indicate the presence of particular compounds or the completion of specific chemical reactions. The exact observations will depend on the specific chemical composition and reactions involved in the experiment.