REQUIRED PRACTICAL: MAKING SALTS
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Last updated 12:27 PM on 11/15/22
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6 Terms
1
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METHOD
Measure 20cm^3 sulfuric acid into measuring cylinder, pour into beaker
Heat acid gently using Bunsen Burner
Add small amounts of insoluble base in excess, until no more reacts
Filter using filter paper and funnel, removing excess copper oxide
Pour solution into evaporating basin
Evaporate solution using water bath until crystals start to form
Leave evaporating basin in cool place for 24 hours
Gently pat crystals dry using filter paper
Heat acid gently using Bunsen Burner
Add small amounts of insoluble base in excess, until no more reacts
Filter using filter paper and funnel, removing excess copper oxide
Pour solution into evaporating basin
Evaporate solution using water bath until crystals start to form
Leave evaporating basin in cool place for 24 hours
Gently pat crystals dry using filter paper
2
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Write chemical reaction for the reaction between CuO and H2SO4
CuO + H2SO4 - CuSO4 + H2O
3
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SAFETY PRECAUTIONS
Bunsen burner should be turned off or turned on safety flame when not in use
Eye protection because sulfuric acid is corrosive
Eye protection because sulfuric acid is corrosive
4
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What are the two methods of seperating mixtures
Crystallisation
Filtration
Filtration
5
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How can you seperate an insoluble product from a solution
Filtration
6
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How can you seperate soluble solids from a solution
Evaporation