KCl: Λm against √c (Example 2.6)KCl: Λm बनाम √c (उदाहरण 2.6)KCl: Λm vs √c (Example 2.6)

NCERT Fig 2.7 · Class 12 Chemistry · Chapter 2 · interactive diagram

Parts and what they mean

• Measured points (NCERT Example 2.6) (मापे गए बिंदु (NCERT उदाहरण 2.6)) — c = 0.000198, 0.000309, 0.000521, 0.000989 mol L⁻¹ → Λm = 148.61, 148.29, 147.81, 147.09 S cm² mol⁻¹.
• Straight line: Λm = Λ°m − A√c (सरल रेखा: Λm = Λ°m − A√c) — Slope = −A, so A = 87.46 S cm² mol⁻¹ (mol L⁻¹)⁻½ for KCl (NCERT). All 1-1 electrolytes in water at 298 K share this A.
• Extrapolation to √c = 0 (√c = 0 तक बहिर्वेशन) — The intercept is the limiting molar conductivity: NCERT reads Λ°m = 150.0 S cm² mol⁻¹ from the graph (a calculator best-fit line gives 149.8).
• Axes (अक्ष) — x: c½ in (mol L⁻¹)½; y: Λm in S cm² mol⁻¹ (scale starts at 146.5 to show the small change).

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 2.7. Report a mistake