Hydrate

When you see the word or suffix "Hydro" what does it make you think of? I automatically think about water. There are plenty of ways hydro is used in Chemistry. You can use it when you say hydrophobic (water fearing), Hydrophilic (water loving), or hydrate (water and compound combination). The official definition for a hydrate is a solid compound in which water molecules are trapped. When you write a hydrates formula you use a dot. You write the compound and after you put the dot then write the water formula and if there is more than one molecule of water then you write that number before the water compound. You have to write it like this because the mass of the water is included in the molar mass of the compound. So this way you won’t get the mass of the compound wrong. If you want to find the mass of the compound with the water then you find the mass of the compound then the mass of the water compound and add them together. If you want to find the mass of the compound without the water the first you have to find the mass of the compound with the water then find the mass of the water and subtract them. If you make the compound react to get a certain amount the you divide the mass of the compound only by the mass of the compound with the water the cross multiply that mass of what your trying to get from the reaction over "x" to see how much of the compound you will need to get that amount out of the reaction. We used this method in a hydrate lab. We had to determine the mass of CuSO subscript 4 with 5 water that would be needed to get 0.60 grams of anhydrous compound. First we had to mass the empty test tube then mass the compound in the test tube.

Once we got this measurement we subtracted then the set you the aporatious with the test tube and Bunsen burner. We moved the Bunsen burner around until all of the compound turned grey, let the test tube cool and remassed it.

My partner and I got the amount just right at 0.04 grams.