Conductivity cellsचालकता सेलConductivity cells

NCERT Fig 2.4 · Class 12 Chemistry · Chapter 2 · interactive diagram

Parts and what they mean

• Platinised platinum electrodes (प्लैटिनीकृत प्लैटिनम इलेक्ट्रोड) — Two Pt electrodes coated with platinum black (finely divided Pt deposited electrochemically), area A, distance l apart.
• Electrolyte solution (विद्युत-अपघट्य विलयन) — The column of solution between the plates has resistance R = ρ l/A.
• Connecting wires (संयोजक तार) — Connect the cell to the Wheatstone bridge (AC source).
• Distance between electrodes (l) (इलेक्ट्रोडों के बीच दूरी (l)) — Cell constant G* = l/A (unit: length⁻¹).
• Area of cross-section (A) (अनुप्रस्थ काट क्षेत्रफल (A)) — Measuring l and A directly is unreliable, so G* is found using a KCl solution of known conductivity: G* = R × κ.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 2.4. Report a mistake