The reaction of (H \_2 O \_2) with potassium permanganate in... | Chemistry | SolveeIt

Question

The reaction of $H _2 O _2$ with potassium permanganate in acidic medium leads to the formation of mainly:

$Mn ^{2+}$

$Mn ^{4+}$

$Mn ^{3+}$

$Mn ^{6+}$

Answer

$Mn ^{2+}$

Explanation

Solution

The correct option is(A): $Mn ^{2+}$ .

The reaction of hydrogen peroxide (H 2 O 2) with potassium permanganate (KMnO 4) in acidic medium leads to the oxidation of H 2 O 2 and the reduction of KMnO 4. The products of this reaction depend on the oxidation states of the elements involved. Let's write and balance the reaction to understand why the answer is Mn 2+:

The balanced chemical equation for the reaction is as follows:

5 H 2 O 2+2 KMnO 4+3 H 2 SO 4→ K 2 SO 4+2 MnSO 4+8 H 2 O +5 O 2

In this reaction, H 2 O 2 is oxidized to O 2, and KMnO 4 is reduced to Mn 2+.

The reaction in acidic medium involves the following changes:

H 2 O 2 is oxidized from its oxidation state of 0 to -2 (oxygen atom).
KMnO 4 is reduced from its oxidation state of +7 (manganese) to +2 (manganese).

The main product formed as a result of this reaction is Mn 2+ (manganese ions), which comes from the reduction of KMnO 4. Therefore, the answer is Mn 2+.

In summary, when hydrogen peroxide reacts with potassium permanganate in acidic medium, the main product formed is Mn 2+ (manganese ions), which is a result of the reduction of KMnO 4.

Chemistry Question on hydrogen peroxide

Solution