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When excess zinc metal is used in a reaction, it can be removed by simple filtration, as long as the particles are big enough. If the zinc particles are too small to be removed by filtration, other techniques such as centrifugation must be employed.

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11y ago
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5d ago

You can separate unused zinc from the reaction mixture by filtering the solution. The unused zinc will remain as solid residue on the filter paper while the liquid (dilute sulphuric acid and any dissolved zinc sulfate) passes through as filtrate.

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Q: How do you separate unused zinc after reacting excess zinc with dilute sulphuric acid?
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