Chemistry

When first conducting the experiment anything was anticipated, but after retesting the experiment a more open view mixed in with underlying results began to uncover... When conducting the experiment of copper sulfate hydrate we began by gathering our materials which consisted mostly of a vaporizing dish, copper sulfate hydrate salt(appox. 5 grams), a bunsen burner, tongs, and a watch glass. The overall reason of the experiment was to ultimaely determine the effects and combustion that the salt would have when heated. Before actually conducting the experiment we began with forming our hypothesis. Hypothesis: If the copper sulfate hydrate is heated then it will turn white because the hydrate instilled within the salt would be removed. So we began by measuring the weight of the watch glass and the evaporating glass together we got approx. 122.68 grams, then added our sulfate hydrate salt with the watch glass and evaprating dish measuring and getting approx. 127.68 grams. then gently heating the dish with the busten burner set at a high tempeature and at a light blue flame almost forming a cone. As we did this we peered through the watch glass and observed it while condensation occured. But where did the water come from' Simple the hydrate inside the little piece of salt is evaporating because of the heat. We later seen the peices decreasing in size the blue coloring turning an almost ashy, white on the outside edges. Present right after that was steam and you could easily see that much water was left on the watch glass. It was half way through the experiment thatwe experienced the present white, chalky ,powdering substance turning a greenish , brownish color. We then let it cool for about 5 mins. to see the wieght or if any sort of reaction occured. Approx. weight: 125.93 grams,the effect being that theevaporation taken place had decreased the weight . As we continued to let it cool the brown greesnish color is fading into a more pleasant and stable white. Then repeating the steps of heating and cooling once again to weigh it and find if any sort of varience took place. Approx. weight: 125.90 grams once again the weight decreased the rest of the water evaporating. After it was completely cool it turned a clean white color. Data: 1. __ = hydrate 5.0 grams Evaporating dish minus Evaporating dish Equals + Hydrate 2. __ anhyd. oxide minus anhyd. salt =3.2 grams Water Anhydrous = CuSO4* XH2O = = 159.6 x= 5 1 gram = ___x___ __ 1___ = ___x___ = .1 159.6 mol 3.2 mol 18 1.8 ___.020__ = ___.1__ .020 .020 (Which equals approx. .020 moles) Conclusion: In the end what what we assumed was going to happen happened so our conclusion was right. After conducting this experiment we questioned if the oppsite of heat , being water would have any sort of effect on the powder substance. So we did that by using a dropper to pour the water and watch the effect... the effect being that it turn not solid but blue to the original color it started out as. Still overall a lot was learned from this experiment something being that copper sulfate hydrate is an easy and very reacant compound element when mixed in with heat or water.