Fehler:
K3AsO3 %2B Zn %2B HCl %3D ZnCl2 %2B AsH3 %2B KCl %2B H2O
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Unerwartets Zeichen ('%')K3AsO3 %2B Zn %2B HCl %3D ZnCl2 %2B AsH3 %2B KCl %2B H2O
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Unerwartets Zeichen ('%')