CHEM 1020 CERTIFICATION EVALUATION 2026
SOLVED QUESTIONS
◉ friedel crafts alkylation Answer: an R group attached to the
benzene
you add what ever is attached to the chlorine or (other halogen)
◉ Friedel-Crafts Acylation Answer: gives you a carboxylic acid on a
benzene
◉ meta directors Answer: DEACTIVATORS, electron withdrawing
groups, make reaction go slower than benzene alone
◉ ortho/para director activators Answer: electron donating groups,
make reactions go faster than benzene alone
the more electronegative atom is CLOSEST to the ring
◉ halogens are Answer: DEACTIVATING and ORTHO PARA
◉ NO2 is a Answer: META director
, ◉ if the molecules have the same molecular formula, but different
connectivity or IUPAC name then Answer: it is a constitutional
isomer
◉ if all the atoms or bonds do not have the same orientation in 3D
space than they are Answer: steroisomers
◉ chiral carbons Answer: sp3 hybridized
bonded to 4 unique groups
◉ how to find stereoisomers Answer: # of chiral carbons plus any
double bonds capable of cis/trans/e/z and then do 2n
◉ chiral molecules Answer: have 1 or more chiral C's
do NOT have a plane of symmetry
ARE optically active
◉ achiral molecules Answer: may or may not have chiral C's
DO have a plane of symmetry
are NOT optically active
◉ r/s system Answer: 1) identify the chiral carbon
2) rank substitutents around that carbon using the R/S conventions
SOLVED QUESTIONS
◉ friedel crafts alkylation Answer: an R group attached to the
benzene
you add what ever is attached to the chlorine or (other halogen)
◉ Friedel-Crafts Acylation Answer: gives you a carboxylic acid on a
benzene
◉ meta directors Answer: DEACTIVATORS, electron withdrawing
groups, make reaction go slower than benzene alone
◉ ortho/para director activators Answer: electron donating groups,
make reactions go faster than benzene alone
the more electronegative atom is CLOSEST to the ring
◉ halogens are Answer: DEACTIVATING and ORTHO PARA
◉ NO2 is a Answer: META director
, ◉ if the molecules have the same molecular formula, but different
connectivity or IUPAC name then Answer: it is a constitutional
isomer
◉ if all the atoms or bonds do not have the same orientation in 3D
space than they are Answer: steroisomers
◉ chiral carbons Answer: sp3 hybridized
bonded to 4 unique groups
◉ how to find stereoisomers Answer: # of chiral carbons plus any
double bonds capable of cis/trans/e/z and then do 2n
◉ chiral molecules Answer: have 1 or more chiral C's
do NOT have a plane of symmetry
ARE optically active
◉ achiral molecules Answer: may or may not have chiral C's
DO have a plane of symmetry
are NOT optically active
◉ r/s system Answer: 1) identify the chiral carbon
2) rank substitutents around that carbon using the R/S conventions
