Fehler:
H2O %2B HBrO3 %2B P2O3 %3D H3PO4 %2B HBr
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Unerwartets Zeichen ('%')H2O %2B HBrO3 %2B P2O3 %3D H3PO4 %2B HBr
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Unerwartets Zeichen ('%')