Hydrates Lab

First, approximately 5g of CuSo4 5H2O was placed into a test tube. (Since it was in chunks, ours started out as 1.5625g)

Next, the tube was held over a Bunson Burner until a chemical reaction took place in the contents of the tube. The color of the CuSo4 5H2O changed from blue to white! Gas escaped the contents.

The mixture was measured. From this, it was noticed that was lighter than before! (That was the weight of the gas contained in the CuSo4 5H2O)
The chemical now weighed 1.02g.

This gives the conclusion that the amount of weight lost from the mixture was .56g.

Just to experiment some more, we further squirted some water into the tube with the mixture. To our surprise, it changed colors back to blue! Neat!