Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas NEET2020ChemistryElectrochemistryPractice

In the electrolysis of water, 1 F of electrical energy would evolve-

Options

  1. A1 mole of oxygen
  2. B1 g atom of oxygen
  3. C8 g of oxygen
  4. D22.4 L of oxygen

Correct answer

C. 8 g of oxygen

Step-by-step solution

Hydrolysis of water can be represented by the following equations 2 H 2 O ⇌ O 2 + 4 H + + 4 e - ∵ 4 Faraday of charge liberate O 2 = 32 g ∴ 1 Faraday of charge liberate O 2 = 32 4 g = 8 g

Practice Electrochemistry on Quantrex Academy →

More from Electrochemistry

Calculate the conductivity of 0.025 M BaCl ₂ solution if the molar conductivity of salt at 25^ C is 325 ⁻¹ cm ^2 mol ⁻¹ . 2026Calculate the equilibrium constant at 25 ^ C for the cell reaction, Ni(s) + Cu ²⁺(1 M ) Ni ²⁺(1 M ) + Cu(s) if E^ _ cell is 0.592 V . 2026Calculate the time required in second to deposit 5.85 g Ni from NiCl ₂ solution by passing 10 A current (molar mass of Ni = 58.5 g mol ⁻¹ ) 2026Which of the following cell reactions is exhibited by fuel cell? 2026Which of the following types of cells is used for electroplating? 2026Which of the following acts as a cathode in a dry cell? 2026What is the Standard cell potential of a cell constituted by two electrodes, A (E^0_ A ^+/ A = 0.30 V ) and B (E^0_ B ^+/ B = +0.42 V ) ? 2026How long (in minutes) must a 2 A current be passed through AgNO ₃ solution to deposit 5.4 g Ag ? [Molar mass of Ag = 108 g mol ⁻¹ ] 2026 Full Electrochemistry list All NTA Abhyas NEET PYQs