Chyba:
H2O %2B NaOH %2B FeSO4 %2B NaClO %3D NaCl %2B Na2SO4 %2B Fe%28OH%293
^Neočakávaný ('%')H2O %2B NaOH %2B FeSO4 %2B NaClO %3D NaCl %2B Na2SO4 %2B Fe%28OH%293
^Neočakávaný ('%')