August 27, 2014
The Determination of the Percent of Water in a Compound
For experiment one, The Determination of the Percent of Water in a Compound, the sole purpose of conducting this experiment was to determine the percent of water found in compounds such as Magnesium Sulfate, Copper Sulfate, and so on. Along with determining the percentages of the hygroscopic compounds the experiment allowed for the exploration of separation of hydrogen bonds to ionic solids through the use of heat. The reason that the water clings to the ionic compounds is due to its polarity, which causes the water molecules to get trapped inside of the compound and integrating into the crystal structure. When water is trapped inside and integrates into the crystal structure the substance is known as a hydrate, which merely means the compound contains water. Not all hydrates are the same though because the number of water molecules to the number of the specific compound molecules can differ. When conducting this experiment in order to achieve the separation of water from the molecule, the substance needed to be heated which was done by a Bunsen burner kept at a low flame under a crucible sitting on a ring stand for ten minutes.
In order to conduct the experiment we had to obtain 1-1.5 grams of one of the four following compounds: Magnesium Sulfate (MgSO4nH2o), Copper (ll) Sulfate (CuSO4nH2O), Manganese (ll) Sulfate (MnSO4nH2O), or Sodium Carbonate (Na2CO3nH2O). A balance was needed in order to weigh the crucible and the crucible lid along with the hydrated substance and dehydrated substance. The Bunsen burner, striker, ring stand, and clay triangle assisted in heated the compound. The striker and the Bunsen burner are both objects that need to be handled with care because they can result in physical harm due to gas explosions.
To conduct this experiment first safety goggles are needed in order to protect eyes from...
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