Error:
HCl %2B K2Cr2O7 %3D H2O %2B Cl2 %2B KCl %2B CrCl3
^Unexpected character ('%')HCl %2B K2Cr2O7 %3D H2O %2B Cl2 %2B KCl %2B CrCl3
^Unexpected character ('%')