Fehler:
H2O %2B HCl %2B K2Cr2O7 %2B As2O3 %3D KCl %2B CrCl3 %2B H3AsO4
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Unerwartets Zeichen ('%')H2O %2B HCl %2B K2Cr2O7 %2B As2O3 %3D KCl %2B CrCl3 %2B H3AsO4
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Unerwartets Zeichen ('%')