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Substance Add Add Add Observations a) 0.1 M FeCl3 0.1 M KSCN Fe^3+(aq) + SCN- (a

ID: 762308 • Letter: S

Question

Substance Add Add Add Observations a) 0.1 M FeCl3 0.1 M KSCN Fe^3+(aq) + SCN- (aq) = FeSCN^2+ (aq) b) FeSO4 x 7H2O H2O Conc H2SO4 0.01 MKMnO4 5Fe^2+(aq) + 8H+(aq)+MnO4-= 5Fe^3+(aq)+H2O+Mn2+(aq) c) FeSO4 x 7H2O H2O Conc NH3 Fe^2+(aq)+2 OH-(aq) = Fe(OH)2(s) d) FeSO4 x 7H2O H2O 0.1 M BaCl2 Concc HCl HSO4-(aq) + Ba^2+(aq) = BaSO4(s) e) FeSO4 x 7H2O H2O 0.1 M KSCN Conc HCl (no reaction) f) FeSO4 x 7H20 Conc HCl (no reaction) Based on the results of tests and observations made in parts I.a-c and I. e, and III. d- f., above, was there a change in oxidation number for the irons upon heating FeSO4 x 7H2O? Use a chemical equation to show the change in oxidation number.

Explanation / Answer

www.docbrown.info/page07/transition06Fe.html http://www.wjec.co.uk/uploads/publications/10344.pdf