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In a chem lab, why do I have to use ethanol and distilled water to rinse solid copper that I will have filtered from a solution of zinc chloride and zinc sulfate?
How does the filtration of zinc chloride and zinc sulfate relate to the use of ethanol and distilled water to rinse the copper?
The filtration of zinc chloride and zinc sulfate is related to the need to clean the copper because the solid copper that is filtered out of the solution may still contain some residual zinc ions and other contaminants. Rinsing the copper with ethanol and distilled water helps to remove these contaminants and leave behind pure copper.