Question

Module 4. 5. 687 621-3 30. Gece the following X, values, which anion is the strongest base? ALE 1 x 10 HCOOH 1.2* 10+ SON 4.9 104 SEO 45 x 10- CHCOOH 51.8x100 AY ON BP c) CHICOO D) COO E NON a tion below is considered to have basic character? A) p2 c

Answer 1

Higher Ka value is strong acid and lower Ka values is weak acid

Conjugate base of weak acid is strong base

Hence we conclude that here Ka value of HCN = 4.9 x 10^-10 is lower than other So HCN is weaker acid than other acid and its conjugate base CN^- is the strong base

So option A is correct CN^- is the strongest base