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Write the half reaction for the followin...

Write the half reaction for the following redox reaction
`(a) 2Fe^(3+)(aq)+2I^(-)(aq)rarr2Fe^(2+)(aq)+I_(2)(aq)`
`(b) Zn(s)+2H^(+)(aq)rarrZn^(2+)(aq)+H_(2)(g)`
(iii) `Al(s)+3Ag^(+)rarrAl^(+3)(aq)+3Ag(s)`

Text Solution

Verified by Experts

(a) Let us write the oxidation numbers of the atoms of all the reactants and products taking part in the reaction

Oxidation half reaction:
Reduction half reaction: `2Fe^(3+)+2e^(-)rarr2Fe^(2+)`
(b) Let us write the oxidation numbers of the atoms of all the reactants and products taking part in the reaction ltbvrgt
Oxidation half reaction : `ZnrarrZn^(2)+2e^(-)`
Reduction half reaction: `2H^(+)+2e^(-)rarrH_(2)`
(c) Let us write the oxidation numbers of the atoms of all the reactatants and products taking part in the reaction

Oxidation half reaction: `AIrarrAI^(3+)+3e^(-)`
Reduction half reaction: `Ag^(+)+e^(-)rarrAg`
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