Question
Asked Dec 3, 2019
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Balance the following redox reaction if it occurs in basic solution. What are the coefficients in front of ClOand H2O in the balanced reaction?

 H2O2(l) + ClO2(aq) → ClO2(aq) + O2(g) 
 
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Expert Answer

Step 1

The given reaction is shown below.

H,O, (l)CO, (aq)->Clo, (aq) +O, (g)
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H,O, (l)CO, (aq)->Clo, (aq) +O, (g)

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Step 2

The decrease in oxidation number is called reduction reaction while the increase in the oxidation number is called oxidation reaction.

The first step for balancing the redox reaction is to divide the given reaction into two half reactions as shown below.

Oxidation half reaction = H2O2(1) >O,(g)
Reduction half reaction = ClO2 ( aq)->ClO2 (aq)
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Oxidation half reaction = H2O2(1) >O,(g) Reduction half reaction = ClO2 ( aq)->ClO2 (aq)

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Step 3

In oxidation half reaction, the oxidation state of Oxygen changes from -1 to 0, whereas in reduction half reaction, the oxidation state of Oxygen changes from +4 to +3.

 

The next step involves balancing of atoms other than Oxy...

Oxidation half reaction H202 ()-0, (g)+2H*
Reduction half reaction CIO, (aq)>ClO, (aq)
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Oxidation half reaction H202 ()-0, (g)+2H* Reduction half reaction CIO, (aq)>ClO, (aq)

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Science

Chemistry

Redox Reactions

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