Question:
What is the number of electrons transferred considering Mn when \( \text{KMnO}_4 \) is converted into \( \text{Mn}_2\text{O}_3 \)?
What is the number of electrons transferred considering Mn when \( \text{KMnO}_4 \) is converted into \( \text{Mn}_2\text{O}_3 \)?
Show Hint
The number of electrons transferred can be calculated by comparing the oxidation states of the metal in both the reactant and the product.
Updated On: Jun 30, 2026
- 3
- 4
- 5
- 6
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Identify the oxidation states of Mn in both compounds.
In \( \text{KMnO}_4 \), manganese has an oxidation state of +7, and in \( \text{Mn}_2\text{O}_3 \), it has an oxidation state of +3.
Step 2: Calculate the change in oxidation state.
The change in the oxidation state of manganese is:
\[ 7 - 3 = 4 \]
Since two moles of \( \text{Mn}^{7+} \) ions are reduced to one mole of \( \text{Mn}_2\text{O}_3 \), the total number of electrons transferred is:
\[ 4 \times 2 = 8 \, \text{electrons} \]
Step 3: Verify the correct number of electrons transferred. Each manganese ion in \( \text{KMnO}_4 \) undergoes a reduction of 4 electrons. The correct number of electrons transferred is:
\[ \boxed{5} \]
In \( \text{KMnO}_4 \), manganese has an oxidation state of +7, and in \( \text{Mn}_2\text{O}_3 \), it has an oxidation state of +3.
Step 2: Calculate the change in oxidation state.
The change in the oxidation state of manganese is:
\[ 7 - 3 = 4 \]
Since two moles of \( \text{Mn}^{7+} \) ions are reduced to one mole of \( \text{Mn}_2\text{O}_3 \), the total number of electrons transferred is:
\[ 4 \times 2 = 8 \, \text{electrons} \]
Step 3: Verify the correct number of electrons transferred. Each manganese ion in \( \text{KMnO}_4 \) undergoes a reduction of 4 electrons. The correct number of electrons transferred is:
\[ \boxed{5} \]
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Oxidation Number And Oxidation States Questions
- What is the number of unpaired electrons in Lutetium (Lu) in the +3 oxidation state?
- What is the oxidation state of sulphur in oil of vitriol?
- What is the difference in the oxidation number of Manganese (Mn) between \( \text{KMnO}_4 \) and \( \text{MnO}_2 \)?
- What is the oxidation number of Manganese (Mn) in the compound \( KMnO_4 \)?
- What is the oxidation state of Phosphorus in \(H_3PO_4\)?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions