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20 December, 00:23

Which metal works best to displace hydrogens from acid?

A. Mercury

B. Lead

C. Gold

D. Iron

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Answers (1)
  1. 20 December, 00:52
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    The correct answer is Iron. That is because it's higher than hydrogen in the reactivity series, and all other that are there can do it too. This includes things like things like Zinc too. Things that are positioned lower can't do this, which includes the ones you mentioned and others.
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