The conductivity of 0.01 M aqueous acetic acid measured with a conductivity cell of cell constant of 0.5 1 cm ^{−1} at 298 K is 3.12\times 10^{-4 } S . If the limiting conductivities of H ^{+} and \CH_3 \COO ^{−} at the same temperature are 349, and 41 S cm ^{2} mol ^{−1} respectively, the dissociation constant of acetic acid is

Correct Answer is : 1.67×10−5

AP EAMCET Engineering 2018 Apr 23 Shift 2 Paper

Section: Chemistry

Question : 142 of 160

Marks: +1, -0

The conductivity of 0.01 M aqueous acetic acid measured with a conductivity cell of cell constant of 0.5 1 cm ‌−1 at 298 K is 3.12×10−4 S . If the limiting conductivities of H ‌+ and CH3COO− at the same temperature are 349, and 41 S cm ‌2 mol ‌−1 respectively, the dissociation constant of acetic acid is

1.67×10−4
1.67×10−5
1.67×10−3
1.67×10−6

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