The conductivity of a weak acid   HA of concentration 0 . 001   mol   L - 1 is 2 . 0 ×…

The conductivity of a weak acid HA of concentration 0.001 mol L-1 is 2.0×10-5 S cm-1. If Λm0(HA)=190 S cm2 mol-1, the ionization constant Ka of HA is equal to ____ ×10-6
(Round off to the Nearest Integer)

Solution

Λm=1000×KM
=1000×2×10-50.001=20 S cm2 mol-1

⇒α=ΛmΛm∞=20190=219

=12.3×10-6

Asked in: JEE Main 2021 (27 Jul Shift 1)

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