The GATE Grind

GATE Physical Chemistry: Electrochemistry: Standard electrode potential and electrochemical cells. Nernst Equation and its application, relationship between electrode potential and thermodynamic quantities, Potentiometric and conductometric titrations. Ionic mobility and conductivity. Kohlrausch’s law, Debye-Hückel limiting law. Debye-Hückel- Onsager equation. – Previous Year Questions

4 GATE previous year questions on Electrochemistry: Standard electrode potential and electrochemical cells. Nernst Equation and its application, relationship between electrode potential and thermodynamic quantities, Potentiometric and conductometric titrations. Ionic mobility and conductivity. Kohlrausch’s law, Debye-Hückel limiting law. Debye-Hückel- Onsager equation. (Physical Chemistry, Chemistry) with answers and explanations, from every paper.

  1. GATE 2026 CY Q35 (1 mark, Numerical answer) – The ionic mobility of Ag+ in very dilute aqueous AgNO3 at 298 K is y10-8 m² V−1 s−1. The value of y (two decimal places) is . Given water viscosity…
  2. GATE 2026 CY Q47 (2 marks, Multiple choice) – For the following electrochemical cells, liquid junction potentials affect the cell potential (Ecell). The correct order of their Ecell at 25 °C is
  3. GATE 2026 CY Q63 (2 marks, Numerical answer) – A calibrated glass-electrode/standard-calomel pH meter measures 0.814 V for pH 4.01 at 25 °C. Its potential for 0.0040 M acetic acid in V (three…
  4. GATE 2025 CY Q63 (2 marks, Numerical answer) – For the cell reaction, Hg 2Cl 2(s)+H 2(1\ atm)2Hg(l)+2H+(a=1)+2Cl-(a=1) The standard cell potential is E0=0.2676 V, and ( E0/ T) P=-3.1910-4\ V\,K-1.…