Error:
HCl %2B KMnO4 %3D Cl2 %2B MnCl2 %2B KCl %2B H2O
^
Unexpected character ('%')HCl %2B KMnO4 %3D Cl2 %2B MnCl2 %2B KCl %2B H2O
^
Unexpected character ('%')