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19/10/2021 11:13 am
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The dissociation constant of two acids HA1 and HA2 are 3.14 × 10-4 and 1.96 × 10-5 respectively. The relative strength of the acids will be approximately
(a) 1 : 4
(b) 4 : 1
(c) 1 : 16
(d) 16 : 1
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19/10/2021 11:17 am
Correct answer: (b) 4 : 1
Explanation:
\(\frac{α_1}{α_2}\) = \(\sqrt{\frac{K_{a_1}}{K_{a_2}}}\)
= \(\sqrt{\frac{3.14 \times 10^{-4}}{1.96 \times 10^{-5}}}\) = 4 :1