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WorksheetsOrganic Chemistry Quiz 1
Total questions: 10
Worksheet time: 2mins
The specific rotation of pure (R)-2-butanol is -13.5°. What % of a mixture of the two enantiomeric forms is (S)-2-butanol if the specific rotation of this mixture is -5.4° ?
40%
30%
70%
60%
None of the above
Which of the following alkyl halides would undergo SN2 reaction most rapidly?
CH3CH2-Br
CH3CH2-Cl
CH3CH2-I
CH3CH2-F
they react at the same rate
Which of the following alkyl halides would you expect to undergo SN1 reaction most rapidly ?
They will give same yield of substitution products
None of them gives substitution products
Predict which of the following carbocations has the highest energy:
All are equally stable
Which of the following molecules is chiral ?
enantiomers
diastereomers
structural isomers
identical
none of the above
The correct IUPAC name for the following compound is:
(1R, 3R)-1-chloro-3-methylcyclohexane
(1R, 3S)-1-chloro-3-methylcyclohexane
(1S, 3S)-1-chloro-3-methylcyclohexane
(1S, 3R)-1-chloro-3-methylcyclohexane
None of the above
Double.
Increase 4 times.
Remain the same.
Decrease.
None of the above.
the energy of A only (b) the energy of B only (c) the energy difference between C and A (d) the energy difference between B and A (e) the energy of C only
the energy of B only
the energy difference between C and A
the energy difference between B and A
the energy of C only
Which of the following alkyl halides would you expect to give the highest yield of substitution product (SN2) with CH3CH2O-Na+ ?
CH3CH2CH2CH2CH2 Br
They will give same yield of substitution products
None of them gives substitution products
