What is the function of NaHSO3/H2SO4 in oxidation of alkene with KMnO4 in alkaline medium? Is it to stop the reaction or to decolorize the MnO2?

i'm oxidizing an alkene with KMnO4 in basic medium so the double bond is dihydroxylated. i'm using a procedure from a journal and it's stated that after the mixture standed for 24 h, H2SO4 is added.

04 April 2019 5,580 1 View