Question:
The total change in the oxidation state of manganese involved in the reaction of KMnO4 and potassium iodide in the acidic medium is______
The total change in the oxidation state of manganese involved in the reaction of KMnO4 and potassium iodide in the acidic medium is______
Show Hint
In redox reactions, calculate the change in oxidation states by comparing reactants and products
Updated On: Jan 16, 2025
Hide Solution
Verified By Collegedunia
Correct Answer: 5
Solution and Explanation
Reaction in acidic medium:
Mn+7 → Mn+2, Change in Oxidation State = 7 − 2 = 5.
- Manganese reduces from +7 in KMnO4 to +2 in Mn2+.
- Total change in oxidation state per manganese atom is 5.
Was this answer helpful?
0
0
Top Questions on Oxidation Number
- In an oxidation-reduction reaction, what happens to the oxidation state of the central atom in \( \text{MnO}_4^- \) when it is reduced to \( \text{Mn}^{2+} \)?
- JEE Main - 2025
- Chemistry
- Oxidation Number
- The group reagent NH\(_4\)Cl (s) and aqueous NH\(_3\), will precipitate which of the following ion
- KCET - 2025
- Chemistry
- Oxidation Number
- In the reaction \( \text{Zn} + 2\text{Ag}^+ \rightarrow \text{Zn}^{2+} + 2\text{Ag} \), what is the oxidation state of zinc in \( \text{Zn} \) and \( \text{Zn}^{2+} \)?
- MHT CET - 2025
- Chemistry
- Oxidation Number
- What is the oxidation state of sulfur in \( \text{H}_2\text{SO}_4 \)?
- MHT CET - 2025
- Chemistry
- Oxidation Number
- What is the oxidation number of sulfur in sulfuric acid (H$_2$SO$_4$)?
- MHT CET - 2025
- Chemistry
- Oxidation Number
View More Questions
Questions Asked in JEE Main exam
- A gas of certain mass filled in a closed cylinder at a pressure of $3.23\,\text{kPa}$ has temperature $50^\circ$C. The gas is now heated to double its temperature. The modified pressure is ___ Pa.
- JEE Main - 2026
- Thermodynamics
- Let the circle \(x^2+y^2=4\) intersect the \(x\)-axis at points \(A(a,0)\) and \(B(b,0)\). Let \(P(2\cos\alpha,2\sin\alpha)\), \(0<\alpha<\frac{\pi}{2}\), and \(Q(2\cos\beta,2\sin\beta)\) be two points on the circle such that \((\alpha-\beta)=\frac{\pi}{2}\). Then the point of intersection of lines \(AQ\) and \(BP\) lies on:
- JEE Main - 2026
- Circles
- The moment of inertia of a square loop made of four uniform solid cylinders, each having radius R and length L (\(R \le L\)) about an axis passing through the mid points of opposite sides, is (Take the mass of the entire loop as M) :
- JEE Main - 2026
- Kinematics
- When a light of a given wavelength falls on a metallic surface the stopping potential for photoelectrons is \(3.2\ \text{V}\). If a second light having wavelength twice of the first light is used, the stopping potential drops to \(0.7\ \text{V}\). The wavelength of the first light is ________ m.
- JEE Main - 2026
- Photoelectric Effect
- An infinitely long straight wire carrying current $I$ is bent in a planar shape as shown in the diagram. The radius of the circular part is $r$. The magnetic field at the centre $O$ of the circular loop is :
- JEE Main - 2026
- Current electricity
View More Questions