Error:
CuSO4*5H2O %2B NaOH %3D Cu%28OH%292 %2B Na2SO4 %2B H2O
^Unexpected character ('%')CuSO4*5H2O %2B NaOH %3D Cu%28OH%292 %2B Na2SO4 %2B H2O
^Unexpected character ('%')