Fehler:
Ti2%28SO4%293 %2B Fe2%28SO4%293 %3D Ti%28SO4%292 %2B FeSO4
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Unerwartets Zeichen ('%')Ti2%28SO4%293 %2B Fe2%28SO4%293 %3D Ti%28SO4%292 %2B FeSO4
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Unerwartets Zeichen ('%')