Question

Transition-metal ions with charges larger than +3 cannot exist in an aqueous solution.

Answer 1

The oxidation of manganese (ii) to manganese (vii) takes place under acidic conditions and is given by the following equation:

$Mn^{2+} (aq)+ 4H_{2}O(aq) \rightarrow MnO_{4}^{-}(aq) + 8H^{+}(aq)$

What are oxidation reactions?

Oxidation reactions are reactions in which the oxidation number of atoms of elements increase.

During oxidation, the atom of the element loses electrons in order for its oxidation number to increase.

The oxidation of manganese (ii) to manganese (vii) is shown as follows:

$Mn^{2+} (aq)+ 4H_{2}O(aq) \rightarrow MnO_{4}^{-}(aq) + 8H^{+}(aq)$

The reaction takes place under acidic conditions.

Therefore, the oxidation of manganese (ii) to manganese (vii) takes place under acidic conditions.

Learn more about oxidation reactions at: brainly.com/question/25886015

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