Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2003ChemistryElectrochemistryActual

The e.m.f. of a Deniell cell at 298 ~K is E ₁ Zn | array c ZnSO ₄ (0.01 M ) array | | array c CuSO ₄ (0.01 M ) array | Cu When the concentration of ZnSO ₄ in 1.0 M and that of CuSO ₄ is 0.01 M , the e.m.f. changed to E ₂ . What is the relationship between E₁ and E₂ ?

Options

  1. AE ₁> E ₂
  2. BE ₁ < E ₂
  3. CE ₁= E ₂
  4. DE ₂=0 E ₁

Correct answer

A. E ₁> E ₂

Step-by-step solution

Cell reaction can be represented as: Zn + Cu ²⁺ Ca + Zn ²⁺ Applying in both cases, E ^0= -0.0591 2 Zn ²⁺ C ²⁺ Thus, E ₁> E ₂

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 NEET PYQs