Final answer:
The stoichiometric factor relating KMnO4 and MnCl2 is 1:1.
Step-by-step explanation:
The stoichiometric factor relating KMnO4 and MnCl2 can be determined from the balanced chemical equation given.
According to the equation, 2 moles of KMnO4 react and produce 2 moles of MnCl2. This means that the stoichiometric factor relating KMnO4 and MnCl2 is 1:1, where 1 mole of KMnO4 reacts with and produces 1 mole of MnCl2.