What elements will displace manganese from the salt solution: K, Fe, Zn, Al, Ni.

Manganese can be displaced, from its salts, only by elements that stand in front of it in the series of metal activities:
K + MnCl2 = KCl + Mn; Al + MnCl2 = AlCl3 + Mn.
Metals that come after manganese, in the series of metal activities, do not react with manganese salts:
Fe + МnCl2 – does not react; Zn + МnCl2 – does not react; Ni + MnCl2 – does not react.



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