Fehler:
KOH %2B KHC2O4*H2C2O4 %3D H2O %2B K2C2O4
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Unerwartets Zeichen ('%')KOH %2B KHC2O4*H2C2O4 %3D H2O %2B K2C2O4
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Unerwartets Zeichen ('%')