EL25405 Electrochemistry Laboratory – Semester IV – ChemElec – R-2025

Subject Code & Name: EL25405 – Electrochemistry Laboratory

Regulation: R-2025

Semester: IV (Fourth Semester)

Branch: B. Tech. Chemical and Electrochemical Engineering (ChemElec)

Credits / L-T-P: 2 Credits | L-T-P: 0-0-4

Course Objectives

• To enable the students to develop a sound working knowledge on different types of electrochemical techniques and electrochemical parameter calculations.

Full Unit-wise Syllabus

Note: the official PDF (and the 2026 Revision 1) prints this course's syllabus heading as “EL25404 Electrochemistry Laboratory”; the curriculum table lists it as EL25405, which is used here.

List of Experiments

• Fabrication of Reference electrode (Ag/AgCl) and its validation
• Fabrication of modified electrodes and calculation of surface excess
• Potentiometric titration of redox couple (Fe/Ce ions)
• Estimation of equilibrium potential of quinhydrone electrode (pH dependence)
• Determination of formal potential and diffusion coefficient for a reversible process using ferricyanide and ferrocyanide
• Distinguish between inner and outer sphere processes using Pt and glassy carbon electrode
• Effect of dissolved oxygen in electrochemical reduction of nitrophenol
• Amperometric method for sensing hydrogen peroxide
• Determination of dihydroxy phenols using cyclic voltammetry
• Investigation of electrochromism using electropolymerisation on a ITO substrate
• Double-layer capacitance measurement using cyclic voltammetry
• Electrode surface area measurement using a redox probe.

Course Outcomes (COs)

• CO1: Understand the fundamental principles, instrumentation, and experimental procedures involved in electrochemical systems and measurements.
• CO2: Apply electrochemical techniques to determine conductivity, electrode potential, and reaction kinetics through laboratory experiments.
• CO3: Analyze experimental data and evaluate the performance of electrochemical systems with respect to accuracy, efficiency, and reliability.
• CO4: Design and conduct electrochemical experiments to solve practical engineering and scientific problems using appropriate methodologies and instruments.

Assessment Pattern (Quick Note)

• Weightage: Continuous Assessment: 60%, End Examinations: 40%
• Internal methodology: Project (30%), Assignment (10%), Practical (30%), Internal Examinations (30%)

Source: Official Anna University – B. Tech. Chemical and Electrochemical Engineering R-2025 Syllabus
Last Updated: October 2026