Which of the following fragmentation reactions would be considered correctly drawn? O الله m/z = 100 امله m/z = 88 OH m/z = 85 mass= 43 . CH mass = 15 HO-C=0 m/z = 45

Consider the following equilibrium: O || R-C-H + HCN HO OH R-C-H | CN (A) When R = CH3CH2-, Keq = 1. (i) Predict whether Keq should be greater or less than 1 when R = CICH2, and (ii) when R is CH2=CH. Explain. (B) In the case where R is CH2=CH, the cyanohydrin is formed faster but given enough time, another constitutional isomeric C4H5NO product predominates. Explain and write a base-catalyzed mechanism for the formation of the other isomer. Recall that: HO HON N

Use resonance/equilibria structures and explain the difference in pka. کھوچھ OH NO₂ C D OH

The first step of the addition of a hydrogen halide to an alkene is the addition of H+ to an sp² carbon to form a carbocation. Predict the carbocation formed in the following reaction and draw the mechanism of its formation. Edit the reaction by drawing all steps in the appropriate boxes and connecting them with reaction arrows. Add charges where needed. Electron-flow arrows should start on an atom or a bond and should end on an atom, bond, or location where a new bond should be created. □ C MN + T [1] A H₂C -CH₂ 7 L H EXP. CONT. i ? L H-Br: Ø H с N O S CI Br I P F