Q.

The molar conductance of M20 solution of weak monoacidic base  is 2 .0 S cm2 mole-1 and at infinite dilution is 200 S cm2  mole-1. [H+] concentration is

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a

10-2

b

5 × 10-4

c

2 × 10-11

d

2 ×10-10

answer is C.

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Detailed Solution

α=λcλ∞=2200=10-2 H+ =10-14OH-=10-1410-2×120=2×10-11
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