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Balance the following equations by oxida...

Balance the following equations by oxidation number method:
a. `Fe^(2+) + Sn^(+2) rarr Sn^(4+) + fe^(2+)`
b. `MnO_(4)^(Ө) + H_(2)S rarr S+Mn^(2+)`
c. `Cr_(2)O_(7)^(2-) + 2I^(Ө) rarr 2Cr^(3+) + I_(2)`
d. `Zn + NO_(3)^(Ө) rarr Zn^(2+) + NH_(4)^(o+)`
e. `MnO_(4)^(Ө)+SO_(3)^(2-) rarr SO_(4)^(2-)+MnO_(2)`
f. `Cl_(2)+IO_(3)^(Ө) rarr IO_(4)^(Ө)` (in basic medium)

Text Solution

Verified by Experts

The correct Answer is:
A
a. `2Fe^(3+)+Sn^(2+)rarrSn^(4+)+2Fe^(2+)`
b. `2MnO_(4)^(ө)+5H_(2)S+6H^(o+)rarr2Mn^(2+)+5S+8H_(2)O`
c. `14H^(o+)+Cr_(2)O_(7)^(2-)_6I^(ө)rarr2Cr^(3)+3I_(2)+7H_(2)O`
d. `10H^(o+)+4Zn+NO_(3)^(ө)rarr4Zn^(2+)+NH_(4)^(o+)+3H_(2)O`
e. `2H^(o+)+2MnO_(4)^(ө)+3SO_(3)^(2-)rarr2MnO_(2)+3SO_(4)^(2-)+H_(2)O`
f. `Cl_(2)+IO_(3)^(ө)+2overset(ө)OHrarr2Cl^(ө)+IO_(4)^(ө)+H_(2)O`
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Balance the following equations by the ion electron method: a. MnO_(4)^(Ө) + Cl^(Ө) + H^(o+) rarr Mn^(2+) + H_(2)O + Cl_(2) b. Cr_(2)O_(7)^(2-) + I^(Ө) + H^(o+) rarr Cr^(3+) + H_(2)O + I_(2) c. H^(o+) + SO_(4)^(2-)+I^(Ө) rarr H_(2)S+H_(2)O+I_(2) d. MnO_(4)^(Ө)+Fe^(2+) rarr Mn^(2+) + Fe^(3+) + H_(2)O

Balance the following reaction by oxidation number method: CrO_(4)^(2-)+I^(ө)rarrCr^(3+)+IO_(3)^(ө) ( in alkaline or basic medium)

Knowledge Check

  • Select the pair of oxidation processes, (a) 2Cu^(2+) rarr Cu_(2)^(2+) ( b) MnO_(4)^(-) rarr Mn^(2+) ( c ) [Fe(CN)_(6) ]^(-4) rarr [ Fe(CN)_(6)]^(-3) ( d) 2I^(-) rarr I_(2)

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