Error:
NaI %2B KMnO4 %2B H2O %3D I2 %2B MnO2 %2B NaOH %2B KOH
^
Unexpected character ('%')NaI %2B KMnO4 %2B H2O %3D I2 %2B MnO2 %2B NaOH %2B KOH
^
Unexpected character ('%')