18-7 Write balanced net ionic equations for the following reactions.Supply H^+ and/or H_(2)O as needed to ob- tain balance. (a) Fc^3++Sn^2+arrow Fc^2++Sn^4+ (b) Cr(s)+Ag^+arrow Cr^3++Ag(s) NO_(3)^-+Cu(s)arrow NO_(2)(g)+Cu^2+ c MnO_(4)^2+H_(2)SO_(3)arrow Mn^2++SO_(4)^2- (c) Ti^3++Fc(CN)_(6)^3-arrow TiO^2++Fc(CN)_(6)^4- H_(2)O_(2)+Cc^4+arrow O_(2)(g)+Cc^3+ (g) Ag(s)+I^-+Sn^4+arrow AgI(s)+Sn^2+ UO_(2)^2++Zn(s)arrow U^4++Zn^2+

Let's correct and balance the net ionic equations for the given reactions:<br /><br />(a) \( Fe^{3+} + Sn^{2+} \rightarrow Fe^{2+} + Sn^{4+} \)<br /><br />Balanced net ionic equation:<br />\[ 2Fe^{3+} + Sn^{2+} \rightarrow 2Fe^{2+} + Sn^{4+} \]<br /><br />(b) \( Cr(s) + Ag^{+} \rightarrow Cr^{3+} + Ag(s) \)<br /><br />Balanced net ionic equation:<br />\[ Cr(s) + 3Ag^{+} \rightarrow Cr^{3+} + 3Ag(s) \]<br /><br />(c) \( NO_{3}^{-} + Cu(s) \rightarrow NO_{2}(g) + Cu^{2+} \)<br /><br />Balanced net ionic equation:<br />\[ 2NO_{3}^{-} + Cu(s) + 4H^{+} \rightarrow 2NO_{2}(g) + Cu^{2+} + 2H_{2}O \]<br /><br />(d) \( MnO_{4}^{-} + H_{2}SO_{3} \rightarrow Mn^{2+} + SO_{4}^{2-} \)<br /><br />Balanced net ionic equation:<br />\[ 2MnO_{4}^{-} + 5H_{2}SO_{3} + 6H^{+} \rightarrow 2Mn^{2+} + 5SO_{4}^{2-} + 3H_{2}O \]<br /><br />(e) \( Ti^{3+} + Fe(CN)_{6}^{3-} \rightarrow TiO^{2+} + Fe(CN)_{6}^{4-} \)<br /><br />Balanced net ionic equation:<br />\[ Ti^{3+} + Fe(CN)_{6}^{3-} \rightarrow TiO^{2+} + Fe(CN)_{6}^{4-} \]<br /><br />(f) \( H_{2}O_{2} + Cu^{2+} \rightarrow O_{2}(g) + Cu^{3+} \)<br /><br />Balanced net ionic equation:<br />\[ H_{2}O_{2} + Cu^{2+} \rightarrow O_{2}(g) + Cu^{3+} + 2H^{+} \]<br /><br />(g) \( Ag(s) + I^{-} + Sn^{4+} \rightarrow AgI(s) + Sn^{2+} \)<br /><br />Balanced net ionic equation:<br />\[ 4Ag(s) + 4I^{-} + Sn^{4+} \rightarrow 4AgI(s) + Sn^{2+} \]<br /><br />(h) \( UO_{2}^{2+} + Zn(s) \rightarrow U^{4+} + Zn^{2+} \)<br /><br />Balanced net ionic equation:<br />\[ 2UO_{2}^{2+} + Zn(s) \rightarrow 2U^{4+} + Zn^{2+} + 2H_{2}O \]