Error:
KKMnO4 %2B HCl %3D MnCl2 %2B KCl %2B Cl2 %2B H2O
^
Unexpected character ('%')KKMnO4 %2B HCl %3D MnCl2 %2B KCl %2B Cl2 %2B H2O
^
Unexpected character ('%')