Q.

The conductivity of a solution containing 2.08 g of anhydrous barium chloride in 200 mL solution is 6×103ohm1cm1. The molar conductivity of the solution (in  ohm cm1mol1 is x x 102. The value of x is 
(Atomic mass of Ba = 137, Cl = 35.5)

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a

1.2

b

2.4

c

3.0

d

3.6

answer is A.

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Detailed Solution

Mass of BaCl2=2.08g

Mass of Solution=200 mL

The molarity of BaCl2 is:

2.08 g208 g/mol0.2 L=0.05 mol/L

Molar conductivity is calculated as:

k×1000M=6×10-3×10000.05=120 ohm cm-1 mol-1=1.2x×102 ohm cm-1 mol-1

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