1. Scale CuSO_4 1.05 g to 10.0 ml beaker of water
, stir 2. Pour 250 ml Flask
3. Prepare ethanol to 10.0 ml beaker
and flask 4. Heat a beaker of about 2.30 minutes.
5. Remove from the heat, pour into a flask ethanol mix
6. set the flask to cool, then soak them in ice crystals
7. Weigh the filter paper and glass clock 96.88 G
8. lead crystal that has gone. filter Wash with cold ethanol
9. Bake for 10 minutes to finish the filter
10. Let cool, then weighed to determine the weight of crystal
weight of CuSO_4 1.05 g
weight paper. And 96.88 g watch glass
paper weight. Glass and crystal clock and 97.66 g
weight of crystal 0.
7800 g about crystallization The Preparation To make up the pure chemical compound. Because of the contamination, it can not exist in crystals. By isolating the compounds How to use filters
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