Stoichiometry & Redox Reaction Test

Result

Stoichiometry & Redox Reaction Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

The reaction 2KClO₃ → 2KCl + 3 O₂is

A
intramolecular redox change

B
intermolecular redox change

C
disproportionation reaction

D
None of these

Solution

The given reaction is an intramolecular redox change.
Question 2
1 / -0

For the reaction between KMnO₄ and H₂O₂, the number of electrons transferred per mole of H₂O₂ is

A
1

B
3

C
2

D
4

Solution

KMnO₄ is a stronger oxidising agent than H₂O₂ in the acidic, basic as well as neutral mediums.
In the neutral medium,
2KMnO₄+ 3H₂O₂ → 2MnO₂ + 2KOH + 2H₂O + 3O₂
The overall equation involves a transfer of 6 electrons.
Therefore, the number of electrons transferred per mole of H₂O₂ is 2 and the number of electrons transferred per mole of KMnO₄ is 3.