Question

4. CHMOBI 5. H,0 37. When an aldehyde is reacted with HCN in the presence of KCN, what product is formed? A) cyanohydrin B) acetal C) hydrate D) oxime 38. Provide the structure of the compound which results when HCN adds to pentanal. 39. Provide the major organic product of the reaction shown below. 1 HCN, KCN 2. H30.A 40. Which of the following is also known as a Schiff base? A) an imine B) a cyanohydrin C) a hydrate D) sodium hydroxide E) an aldehyde CHM 222: Organic Chemistry Name: Dr. Erendra Manandhar ACTIVITY SHEET: KRTONES AND ALDEHYDES (CH+18)

Answer 1

Ans - 37 HQ .cn +HEN Kong R-CH Aldehyde cyano Hydrin soa option (A) a cyano Hydrin is correct & option Ans-38 H₃C- CH₂ - CH₃ -CH-C-H + H C N we + HCM Pentanal HO - Answer (38) CN H mechansman co HO

Ans-39 - Сон • O HON, KON @ H30@ mechanism o H — С. Hoe OH -CEN group with H₂OB giver Acid C-t-on) - cool Answer to wen let Ritara + H₂N-R H₂N-R Carbonyl group Primary Ammine N-R R - R Answer - (4 Imine Schift Base option At An immine

Answer 37. An aldehyde with HCN and KCN gives cyanohydrin. Option A is correct.

Answer 40. Schiff base is also known as an imine. Option A is correct.