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21 March, 18:16

Which of the following metals or nonmetals are expected to displace Mn or Cl (respectively) from MnCl2? 1. Cu should displace Mn. 2. Ca should displace Mn. 3. Br should displace Cl. 4. I should displace Cl.

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  1. 21 March, 19:36
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    Answer:. Ca should displace Mn

    Explanation:

    Calcium is high up in the activity series of metals. Calcium has a very negative redox potential of - 2.87 V, next only to potassium. Transition metals of which Manganese is one, does not have such very negative redox potentials so they can easily be displaced by a more highly reactive metal such as Calcium. Elements of group 1 and 2 are very highly reactive.
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