Error:
MnO2 %2B NaCl %2B H2SO4 %3D MnSO4Na2SO4 %2B Cl2 %2B H2O
^Unexpected character ('%')MnO2 %2B NaCl %2B H2SO4 %3D MnSO4Na2SO4 %2B Cl2 %2B H2O
^Unexpected character ('%')