Error:
Cl2 %2B KOH %2B K%5BCr%28OH%294%5D %3D H2O %2B KCl %2B K2CrO4
^
Unexpected character ('%')Cl2 %2B KOH %2B K%5BCr%28OH%294%5D %3D H2O %2B KCl %2B K2CrO4
^
Unexpected character ('%')