Balance the following redox reactions by ion-electron method- H2O2aq-Fe2-aq- Fe3-aq-H2Ol in acidic solution

The oxidation half reaction is Fe^2+(aq) → Fe^3+(aq) +e^ .The reduction half reaction is H_2O_2(aq) +2H^+(aq) +2e^ → 2H_2O(l) .In the above half rea ...

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Standard XII

Chemistry

Balancing Redox Equations

Balance the f...

Question

Balance the following redox reactions by ion-electron method.

$H_{2} O_{2} (a q) + F e^{2 +} (a q) \to F e^{3 +} (a q) + H_{2} O (l)$ (in acidic solution)

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Solution

The oxidation half reaction is $F e^{2 +} (a q) \to F e^{3 +} (a q) + e^{-}$ .

The reduction half reaction is $H_{2} O_{2} (a q) + 2 H^{+} (a q) + 2 e^{-} \to 2 H_{2} O (l)$ .

In the above half-reactions, all the atoms are balanced.

The oxidation half-reaction is multiplied by 2 so as to balance the number of electrons in oxidation half-reaction with reduction half-reaction.

$2 F e^{2 +} (a q) \to 2 F e^{3 +} (a q) + 2 e^{-}$ .

The oxidation half-reaction is then added to the reduction half-reaction to obtain a balanced chemical equation.

$H_{2} O_{2} (a q) + 2 F e^{2 +} (a q) + 2 H^{+} \to 2 F e^{3 +} (a q) + 2 H_{2} O (l)$

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Balance the following redox reactions by ion-electron method:
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$H_{2} O_{2} (a q) + F e^{2 +} (a q) \to F e^{3 +} (a q) + H_{2} O (l)$ (in acidic solution)

$C r_{2} O_{7}^{2 -} + S O_{2} (g) \to C r^{3 +} (a q) + S O_{4}^{2 -}$ (aq) (in acidic solution)

Q. Balance the following redox reactions by ion electron method.

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Q. Balance the following redox reactions by the ion-electron method in acidic medium.

M n O_{4}^{-} (a q) + S O_{2} (g) \to M n^{2 +} (a q) + H S O_{4}^{-} (a q)

Q. Balance the redox reaction by Half reaction method.

{F e}^{2 +} (a q) + {C r}_{2} O_{7}^{2 -} (a q) (acid medium) - ------- \to {F e}^{3 +} (a q) + {C r}^{3 +} (a q)

How to balance this by oxidation number method $H_{2} O_{2} (a q) + F e^{2} (a q) + ⟶ F e^{3} (a q) + H_{2} O (l)$ [in acidic medium)

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Balance the following redox reactions by ion-electron method.H2O2(aq)+Fe2+(aq)→Fe3+(aq)+H2O(l) (in acidic solution)

Balance the following redox reactions by ion-electron method.

$H_{2} O_{2} (a q) + F e^{2 +} (a q) \to F e^{3 +} (a q) + H_{2} O (l)$ (in acidic solution)