Write correctly balanced half reactions and overall equations for the following skeletal equations:
a. `NO_(3)^(ө)+Bi(s)rarrBi^(3+)+NO_(2)` ( in acid solution)
b. `Fe(OH)_(3)(s)+H_(2)O_(2)rarrFe(OH)(s)+H_(2)O+O_(2)` (in basic medium)
c. `Cr_(2)O_(7)^(2-)+C_(2)H_(4)OrarrC_(2)H_(4)O_(2)+Cr^(3+)` (in acid solutions)
d. `MnO_(4)^(ө)+H_(2)C_(2)O_(4)rarrMn^(2+)+CO_(2)uarr` (in acid solutions)
e. `Al(s)+NO_(3)^(ө)rarr[Al(OH)_(4)]^(ө)+NH_(3)` (in basic solution)
f. `Cr_(2)O_(7)^(2-) + Fe^(2+) rarr Fe^(2+) + Cr^(3+)` (in acid solution)
g. `MnO_(4)^(Ө) + Br^(Ө) rarr Mn^(2+) + Br_(2)` (in acid solution)
h. `PbO_(2) + Cl^(Ө) rarr ClO^(Ө) +[Pb(OH)_(3)]^(Ө) ` (in basic solution)

Answer

A

Explanation

a. `Bi+6H^(o+)+3NO_(3)^(ө)rarr3NO_(2)+3H_(2)O+Bi^(3+)`
b.`2Fe(OH)_(3)+H_(2)O_(2)rarr2Fe+3CO`
`2Fe(OH)_(3)+H_(2)O_(2)rarr2Fe(OH)_(2)+2H_(2)O+O_(2)`
c. `Cr_(2)O_(7)^(2-)+8H^(o+)+3C_(2)H_(4)Orarr2Cr^(3+)+4H_(2)O+3C_(2)H_(4)O_(2)`
d. `2MnO_(4)^(ө)+6H^(o+)+5H_(2)C_(2)O_(4)rarr2Mn^(2+)+8H_(2)O+10CO_(2)`
e. `8Al+5overset(ө)OH+3NO_(3)^(ө)+18H_(2)Orarr8Al(OH)_(4)^(ө)+3NH_(3)`
f. `Cr_(2)O_(7)^(2-)+14H^(o+)+6Fe^(2+)rarr2Cr^(3+)+7H_(2)O+6Fe^(3+)`
g. `2MnO_(4)^(ө)+16H^(o+)+10Br^(ө)rarr2Mn^(2+)+8H_(2)O+5Br_(2)`
h. `PbO_(2)+CI^(ө)+overset(ө)OH+H_(2)Orarr[Pb(OH)_(3)]^(ө)+CIO^(ө)`