Simplify the following text for a Grade 13 native English-speaking person.
Original: Potassium permanganate spontaneously reduces in an basic solution to green-coloured potassium manganate , where manganese is in the +6 oxidation state .
Simplified: KMnO4 spontaneously reduces in an alkaline solution to green K2MnO4 , wherein manganese is in the +6 oxidation state .