IB Chemistry HL 3.4.13 Hl Electrophilic Substitution in Benzene Topic Practice

benzene: electrophilic substitution/ $\mathrm{S}_{\mathrm{E}}$
AND
cyclohexene: electrophilic addition/ $\mathrm{A}_{\mathrm{E}}$

curly arrow going from benzene ring to N of ${ }^{+} \mathrm{NO}_{2} / \mathrm{NO}_{2}{ }^{+}$ carbocation with correct formula and positive charge on ring curly arrow going from C-H bond to benzene ring of cation formation of organic product AND $\mathrm{H}^{+}$

Marking guidance:

Accept mechanism with corresponding Kekulé structures.

Do not accept a circle in M2 or M3.

Accept first arrow starting either inside the circle or on the circle.

M2 may be awarded from correct diagram for M3.

M4: Accept $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}+\mathrm{H}_{2} \mathrm{SO}_{4}$ if $\mathrm{HSO}_{4}{ }^{-}$ used in M3.