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Accumulation of lactic acid ( HC_3 H_5 O_3 ), a monobasic acid in tissues leads to pain and a feeling of fatigue. In a 0.10 M aqueous solution,…

NEET UG 2013 — Chemistry Physical Chemistry

2013mcqhard

Accumulation of lactic acid (HC3H5O3)\left(\mathrm{HC}_3 \mathrm{H}_5 \mathrm{O}_3\right)(HC3​H5​O3​), a monobasic acid in tissues leads to pain and a feeling of fatigue. In a 0.10 M\mathrm{M}M aqueous solution, lactic acid is 3.7%3.7 \%3.7% dissociates. The value of dissociation constant, Ka\mathrm{K}_aKa​, for this acid will be:

Official previous-year question

Held on 30 Apr 2013 · Verified 9 Jul 2026.

Options

  1. A

    1.4×10−51.4 \times 10^{-5}1.4×10−5

  2. B

    1.4×10−41.4 \times 10^{-4}1.4×10−4

  3. C

    3.7×10−43.7 \times 10^{-4}3.7×10−4

  4. D

    2.8×10−42.8 \times 10^{-4}2.8×10−4

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