Thursday, May 26, 2011

Lab 10.2: Solubility vs. Temperature

Our graph was similar to table G in our reference tables but because we only had four points our graph it showed some differences and created some room for error. Only using ten grams of solvent instead of one-hundred on our graph created less accurate results as compared to the one on table G.
In our experiment the temperature of water impacted on how quickly solvent dissolved. The more KLO3 (greater concentration) the more time it takes to dissolve. To dissolve more quickly we put the test tube into a hot water bath to increasing the temperature of the solution. When the solution is liquifyied the particles make more collisions, and they are also more efficient(effective). At the liquid stage the particles are less attracted to each other than at a solid. bB crushing the KLO3 you could increase its surface area and help to speed up the rate of reaction. In our experiment the solution was unsaturated when the KLO3 was undissolved at the bottom of the test tube. It was saturated when the KLO3 had completely dissolved into the solution.

Enrichment:
Rock candy is a saturated solution. Yo saturate the water you add as much sugar as it can take, but then heating the water you create more space for sugar creating a supersaturated solution. You would then add the string into the water on which the rock candy would form as the water cools the sugar to come out of the solution forming a precipitate which we know as the crystals of the rock candy. This is because the super saturated solution has more sugar in it than it can possibly hold.

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