Molar conductivity vs √c: strong vs weak electrolyteमोलर चालकता बनाम √c: प्रबल बनाम दुर्बल विद्युत-अपघट्यMolar conductivity vs √c: strong vs weak electrolyte

NCERT Fig 2.6 · Class 12 Chemistry · Chapter 2 · interactive diagram

Parts and what they mean

• KCl — strong electrolyte (KCl — प्रबल विद्युत-अपघट्य) — Λm increases only slowly on dilution and follows Λm = Λ°m − A c½ (a straight line against c½).
• Extrapolation to c = 0 gives Λ°m (c = 0 तक बढ़ाने पर Λ°m) — Intercept = limiting molar conductivity; slope = −A. For KCl (NCERT Example 2.6): Λ°m = 150.0 S cm² mol⁻¹, A = 87.46.
• Acetic acid — weak electrolyte (ऐसीटिक अम्ल — दुर्बल विद्युत-अपघट्य) — Λm rises steeply at low concentration because the degree of dissociation increases. Λ°m cannot be found by extrapolation — use Kohlrausch’s law instead.
• Axes (अक्ष) — x: square root of concentration; y: molar conductivity. Curves drawn from NCERT data: KCl from Example 2.6 (dilute range) joined to Table 2.3 (0.1 M: 129.0); acetic acid from Ka = 1.78 × 10⁻⁵, Λ°m = 390.5.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 2.6. Report a mistake