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Balance the following by ion electron me...

Balance the following by ion electron method is basic medium.
`NO_(3)^(ө)+Znrarr Zn^(2+)+NH_(4)^(oplus)`.

Text Solution

Verified by Experts

Two half reactions are
a. `NO_(3)^(ө)rarrNH_(4)^(o+)`
b.`ZnrarrZn^(2+)`
First balance `O` atoms in basic medium.
a. `NO_(3)^(ө)+3H_(2)OrarrNH_(4)^(o+)+6overset(ө)OH`
Balancing `H` atoms in basic medium
`NO_(3)^(ө)+3H_(2)+4H_(2)OrarrNH_(4)^(o+)+6overset(ө)OH+4overset(ө)OH`
Balancing the charge:
`NO_(3)^(ө)+8e^(-)+7H_(2)OrarrNH_(4)^(o+)+10overset(ө)OH`
b. `ZnrarrZn^(2+)+2e^(-)`
Now reaction is
`4Zn+NO_(3)^(ө)+7H_(2)Orarr4Zn^(2+)+NH_(4)^(o+)+10overset(ө)OH`
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