Fill in the blank: excess hydroxide ions must be neutralized with oxalic acid. The oxalic acid will alsoneutralize the hydroxide ions of the iron (III) hydroxide precipitate, releasing the iron(III)ion back into solution. Oxalic acid is chosen so that no additional anions will be present tointerfere with the formation of the complex. The excess oxalate ions convert all iron presentinto a soluble complex ion with three oxalate ions attached to the iron(III) ion.____ Fe(OH)3 (s) + ___________ (aq) → ____( ) + ___ H2O ( ) + ______ ( )

Question

Fill in the blank:

excess hydroxide ions must be neutralized with oxalic acid. The oxalic acid will also
neutralize the hydroxide ions of the iron (III) hydroxide precipitate, releasing the iron(III)
ion back into solution. Oxalic acid is chosen so that no additional anions will be present to
interfere with the formation of the complex. The excess oxalate ions convert all iron present
into a soluble complex ion with three oxalate ions attached to the iron(III) ion.
____ Fe(OH)3 (s) + ___________ (aq) → ____( ) + ___ H2O ( ) + ______ ( )

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