Values of dissociation constant, K_a are given as follows. \text{ Acid } \text{ Ka } {\HCN} 6.2 \times 10^{-10} {\HF} 7.2 \times 10^{-4} {\HNO}_2 4.0 \times 10^{-4} Correct order of increasing base strength of the base {\CN}^{-} , {\F}^{-} and {\NO}_2^{-} will be :

Correct Answer is : F<NO2−<CN−

{\NO}_2^{-}< {\CN}^{-}< {\F}^{-}

{\NO}_2^{-}< {\F}^{-}< {\CN}^{-}

VITEEE 2023 Paper

Section: Chemistry

Question : 39 of 125

Marks: +1, -0

Values of dissociation constant, Ka are given as follows.

‌ Acid ‌‌‌ Ka ‌
HCN‌‌‌‌‌‌‌6.2×10−10
HF‌‌‌‌‌‌‌‌‌‌7.2×10−4
HNO2‌‌‌‌‌‌4.0×10−4
Correct order of increasing base strength of the base CN− , F− and NO2− will be :

F<CN−<NO2−
NO2−<CN−<F−
F<NO2−<CN−
NO2−<F−<CN−

Validate

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