CHM 202 Quiz – Covalent Bond and Organic Reactions

In an SN1 reaction between a tertiary alkyl halide and water, the rate-determining step involves:

Which intermolecular force is the weakest and often disappears and reappears due to the movement of atoms?

Which alkyl halides(s) would undergo dehydrogenation to give the following pure alkene, methylenecyclohexane?

Which of the following compounds undergoes racemization?

Which of the following is a polar aprotic solvent?

In the Lewis structure of methanol (CH3OH), how many lone pairs of electrons are present on the oxygen atom?

Arrange the following in order of decreasing boiling point: HF; H2O; Hal

The following is/are correct for SN1 reaction mechanism except; (i) The geometry of the transition state (ii) It is favoured with primary alkyl halide (iii) The substrate and product are of opposite configuration (iv) The product are of the same geometry

Arrange the following in decreasing order of acidity; Ethnic acid; dichloroethanoic acid; monochloroethanoic acid; and trichloroethanoic acid. Give reason for your answer.

What is the product of the heterolytic cleavage of a covalent bond?

What is the IUPAC name of the following compound: CH3CH2CH(CH3)CH2CH3?

How many optical isomers does a compound with two chiral carbon atoms possess?

How many chiral carbons do glucose and fructose each have?

Consider the compound below having its C-atoms numbered 1 - 9. Indicate the chiral C-atom(s) in the molecule;

The boiling point of a substance increases with the strength of the intermolecular forces between its molecules. Which of the following substances would be expected to have the highest boiling point?

Which of the following represents the product of the SN2 reaction between CH3CH2ONa and CH3CH2Cl?

In a nucleophilic substitution reaction, the nucleophile is a:

Give the total number of resonance canonical structures for methoxybenzene and the number of the canonical structures that are ionic;

What type of solvent can solvate both cations and anions?

Which of the following molecules exhibits hydrogen bonding?

Which notation is used to designate the spatial arrangement of atoms in an optically active compound?

Alkanes can be prepared by the following methods except; (i) Dehydrohalogenation (ii) Hydration of alkenes (iii) Hydrogenation of unsaturated hydrocarbons (iv) Electrophilic addition reaction.

Why does NaCl dissolve readily in water but not in benzene?

Consider the above compound: How many chiral C-atoms are present; Indicate the specific configuartion of all C-atoms present and give the number of optically active isomers of the compound.

How many chiral centre(s) are there in 1-bromo-1,2-dihydroxylpropane?