1. Figure out the molar mass of CuSO4*5H2O
2. Figure out the mass of 5H2O, then make a prediction about what percent of the entire thing is water.
3. After making this prediction, weigh out 5grams of Copper Sulfate Pentahydrate.
4. Take the Copper Sulfate and place it in a test tube. Use a bunsen burner to heat the test tube until the Copper Sulfate is not longer blue.
5. Wait until the tube is cooled, then weight the Copper Sulfate again.
6. Record the differences of the Copper Sulfate before and after it was heated to find the weight lost. Then calculate exactly how much water was lost.
7. For fun, take remains of the heated Copper Sulfate and pour water on it.
My Group:
1. My group figured out that the molar mass of CuSo4*5H2O was 250 grams.
2. The mass of 5H2O was 90 grams. Therefore our prediction was that 36% of the Copper Sulfate was water.
3. We completed our procedure and weighted our 5g sample after begin heated. After a date with the bunsen burner, the Copper Sulfate weighed 3.28 grams, being that there was a total weight loss of 1.72 grams.
4. Therefore, we concluded that 34% of our sample of Copper Sulfate was actually water.
5. *SPOILERS* After the Copper Sulfate is heated it turns white. By adding water back to it, it returns to its original blue color!
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