Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main202430 Jan 2024Evening ShiftChemistryElectrochemistryActual

Reduction potential of ions are given below: ClO 4 - IO 4 - BrO 4 - E ° = 1 . 19 V ; E ° = 1 . 65 V ; E ° = 1 . 74 V The correct order of their oxidising power is:

Options

  1. AClO 4 - > IO 4 - > BrO 4 -
  2. BBrO 4 - > IO 4 - > ClO 4 -
  3. CBrO 4 - > ClO 4 - > IO 4 -
  4. DIO 4 - > BrO 4 - > ClO 4 -

Correct answer

B. BrO 4 - > IO 4 - > ClO 4 -

Step-by-step solution

The reduction potential of the substance is the ability of the substance to be reduced. So as the reduction potential increases, the reducing ability of the substance increases. It means the oxidising power of the substance (The ability of the substance to make the other substance to lose the electrons increases, which nothing but oxidising power) increases. So the decreasing order of oxidising power is BrO 4 - > IO 4 - > ClO 4 - . Hence option B is correct.

Practice Electrochemistry on Quantrex Academy →

More from Electrochemistry

At 300 K, the molar conductivities of the aqueous solutions of three salts at two different concentrations are given below: Salt Concentration (M) Molar conductivity (S cm ^2 mol ⁻ 2026Given at 298 K: E^ _ Fe²⁺/Fe = X Volt; E^ _ Fe³⁺/Fe = Y Volt. The E^ _ Fe³⁺/Fe²⁺ in Volt at 298 K is given by: 2026For a general redox reaction Anode : Red ₁ Ox ₁^ n₁^+ + n₁ e^- Cathode : Ox ₂ + n₂ e^- Red ₂^ n₂^- Which of the following statements is incorrect? 2026Consider the following data. Electrolyte ^ _m (S cm ^2 mol ⁻¹ ) BaCl ₂ x₁ H ₂ SO ₄ x₂ HCl x₃ BaSO ₄ is sparingly soluble in water. If the conductivity of the saturated BaSO ₄ solut 2026One half cell in a voltaic cell is constructed by dipping silver rod in AgNO₃ solution of unknown concentration, other half cell is Zn rod dipped in 1 molar solution of ZnSO₄ . A v 2026At 298 K , the molar conductivity of x % (w/w) MX solution (aqueous) is 123.5 S cm ^2 mol ⁻¹ . The conductance of same solution is 1.9 10⁻³ S . The value of x is _______ 10⁻² . (Gi 2026An electrochemical cell, consist of the following two redox couples, M^ x+ (aq)/M(s)[E_ red ^ =+0.15 V ] and Fe³⁺(aq)/Fe(s)[E_ red ^ =-0.036 V ] . The cell EMF (E_ cell ) is record 2026Consider the following two half-cell reactions along with the standard reduction potential given: CO₂ + 6H^+ + 6e^- CH₃ OH + H₂ O E°_ red = 0.02 V 1 2 O₂ + 2H^+ + 2e^- H₂ O E°_ red 2026 Full Electrochemistry list All JEE Main PYQs