The specific conductance of 0.0025 M acetic acid is at a certain temperature. The dissociation constant of acetic acid is . (Nearest integer)

Consider limiting molar conductivity of as

Question

The specific conductance of 0.0025 M acetic acid is  at a certain temperature. The dissociation constant of acetic acid is . (Nearest integer)

Consider limiting molar conductivity of  as

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Strategy:
 First, calculate the molar conductivity () from the specific conductance and concentration. Then find the \degree of dissociation () using  and the limiting molar conductivity. Finally, use Ostwald's Dilution Law to find .

Step 1: Calculate 
, .

Step 2: Calculate

Step 3: Calculate

Nearest integer is 66.

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