Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET20242 May 2024Evening ShiftChemistryElectrochemistryActual

Which of the following changes occurs during the discharging of lead accumulator?

Options

  1. APb _ (s) is reduced
  2. BH ₂ SO ₄ is consumed
  3. CPbSO ₄ is consumed
  4. DPbO ₂ is produced

Correct answer

B. H ₂ SO ₄ is consumed

Step-by-step solution

During discharge, the following reaction occurs: Pb _ ( s ) + PbO _ 2( ~s ) +2 H ₂ SO _ 4( aq ) 2 PbSO _ 4( ~s ) +2 H ₂ O _ ( l As the cell operates to generate current, H ₂ SO ₄ is consumed.

Practice Electrochemistry on Quantrex Academy →

More from Electrochemistry

Which of the following is always true about a spontaneous cell reaction in a galvanic cell? 2026The G ^o for the reaction, Cd ²⁺(aq) + Zn (s) Zn ²⁺(aq) + Cd (s) is: [E^o_ Cd ²⁺/ Cd = -0.403, E^o_ Zn ²⁺/ Zn = -0.763 V ] 2026Resistance of 0.2 M solution of an electrolyte is 50 . The conductivity of the solution is 1.3 Sm ⁻¹ . If the resistance of 0.4 M solution of the same electrolyte is 260 , its mola 2026Using the data given below, the strongest reducing agent is: E^o_ Cr ₂ O ₇²⁻/ Cr ³⁺ = 1.33 V E^o_ MnO ₄^-/ Mn ²⁺ = 1.51 V E^o_ Cl ₂/ Cl ^- = 1.36 V E^o_ Cr ³⁺/ Cr = -0.74 V 2026The quantity of Ca that can be produced from molten CaCl₂ , with the same quantity of electricity (in coulombs) required to produce 4.8 g of Mg from molten MgCl₂ is: [Atomic mass o 20263.482 10⁻¹ g of Fe gets deposited when an aqueous solution of Ferric sulphate is electrolysed for 20 minutes using a current of "x" amperes. Find "x". (Atomic mass of Fe = 56amu). 2026Consider a Galvanic cell in which the following reactions occurs: Fe ²⁺(aq) + Ag ^+(aq) Fe ³⁺(aq) + Ag (s) . What is the standard potential of the cell? Given: E^0_ ( Ag ^+/ Ag ) = 2026What will be the change in the electrode potential of chromium electrode dipping into chromic sulphate solution, when the electrolyte is diluted 10 times at 25^ C? [ E^0 ( Cr ³⁺/ C 2026 Full Electrochemistry list All MHT CET PYQs