Chemistry - GOC Question with Solution | TestHub

(i), (ii), (iii), (v) and (vi) are correct.

Compound

pka of its conjugate ⇒ 5.21

Compound

pka of its conjugate ⇒ 4.62

Compound

pka of its conjugate ⇒ 9.11

(vii) % of s-character.

Case (ii): I is 2-aminopyridine and II is pyridine. The -NH2 group in I donates electron density by resonance, so I is more basic than II (pKa of conjugate acid about 6.9 for I vs 5.2 for II). Case (ii) is also correct.