Question

Shown below is a carbocation intermediate in an electrophilic addition reaction of HCl with an alkene. For the conformation shown, select each hydrogen whose bond to carbon is aligned for effective hyperconjugation with the vacant p orbital on the positively charged carbon. Each adjacent carbon will have only one C-H bond so aligned. • Gray = C; white = H; red = O; blue = N; dark green = Cl; brown = Br; light green = F; purple = I; yellow = S; orange = P. • Double click to select atoms. • You can zoom in and out using the mouse scroll wheel (or pinch to zoom on touch screens).

          Shown below is a carbocation intermediate in an electrophilic addition reaction of HCl with an alkene.

For the conformation shown, select each hydrogen whose bond to carbon is aligned for effective hyperconjugation with the vacant p orbital on the positively charged carbon. Each adjacent carbon will have only one C-H bond so aligned.

• Gray = C; white = H; red = O; blue = N; dark green = Cl; brown = Br; light green = F; purple = I; yellow = S; orange = P.
• Double click to select atoms.
• You can zoom in and out using the mouse scroll wheel (or pinch to zoom on touch screens).

Shown below is a carbocation intermediate in an electrophilic addition reaction of HCl with an alkene.

For the conformation shown, select each hydrogen whose bond to carbon is aligned for effective hyperconjugation with the vacant p orbital on the positively charged carbon. Each adjacent carbon will have only one C-H bond so aligned.

• Gray = C; white = H; red = O; blue = N; dark green = Cl; brown = Br; light green = F; purple = I; yellow = S; orange = P.
• Double click to select atoms.
• You can zoom in and out using the mouse scroll wheel (or pinch to zoom on touch screens).

Added by Sara N.

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