Multiple Choice Quiz

Multiple Choice Quiz

Multiple Choice Quiz


1		Consider the following two anionic molecules. Which of the following statements is TRUE?
			A)	I is more basic and more nucleophilic than II.
			B)	I is less basic and less nucleophilic than II.
			C)	I is more basic but less nucleophilic than II.
			D)	I is less basic but more nucleophilic than II.


2		Consider ammonia (I) and water (II). Which of the following statements is TRUE?
			A)	I is more basic and more nucleophilic than II.
			B)	I is less basic and less nucleophilic than II.
			C)	I is more basic but less nucleophilic than II.
			D)	I is less basic but more nucleophilic than II.


3		Which halide ion is the best nucleophile in dimethyl sulfoxide solution?
			A)	fluoride
			B)	chloride
			C)	bromide
			D)	iodide


4		Which reagent is a good nucleophile?
			A)	NH₃
			B)	HBr
			C)	Br₂
			D)	BH₃


5		Which is the MOST basic nucleophile in the following series?
			A)	F^-
			B)	CH₃CH₂OH
			C)	H₂O
			D)	CH₃CH₂O^-


6		Which is the best leaving group in a substitution reaction of an alkyl halide?
			A)	Cl^-
			B)	Br^-
			C)	I^-
			D)	F^-


7		Which statement is TRUE with respect to an S_N2 reaction?
			A)	A good leaving group is a strong base.
			B)	A good leaving group is a weak base.
			C)	A leaving group must be negatively charged.
			D)	A leaving group must be a halide.


8		Which of the following will react MOST readily with NaCN to form propionitrile, CH₃CH₂CN?
			A)	CH₃CH₂OH
			B)	CH₃CH₂F
			C)	CH₃CH₂NH₂
			D)	CH₃CH₂Br


9		Which of the following (X) is the best leaving group?
			A)	X = Iodide
			B)	X = Chloride
			C)	X = Bromide
			D)	X = Fluoride


10		Which of the following nucleophiles is going to promote an S_N2 reaction?
			A)	NaI
			B)	Water
			C)	NH₄Cl
			D)	MeONa


11		Which of the following is an S_N1 reaction?
			A)
			B)
			C)
			D)


12		Which of the following is NOT a good nucleophile for an S_N1 reaction?
			A)	MeONa
			B)	MeOH
			C)	EtOH
			D)	H₂O


13		Consider the following reaction. What would happen if the concentration of NaOCH₃ was doubled?
			A)	The rate of reaction would double.
			B)	The rate of reaction would be halved.
			C)	The rate of reaction would stay the same.
			D)	Elimination would become the major reaction.


14		What is the likely mechanism for the following reaction? CH₃Cl + NaOH → CH₃OH + NaCl
			A)	S_N1
			B)	S_N2
			C)	neither
			D)	could be either S_N1 or S_N2


15		Rank the following cations in order from most stable to least stable:
			A)	1 > 2 > 3 > 4
			B)	4 > 3 > 2 > 1
			C)	2 > 1 > 4 > 3
			D)	3 > 4 > 2 > 1


16		How many total resonance structures can be drawn for the following carbocation?
			A)	0
			B)	1
			C)	3
			D)	4


17		Which is the MOST stable cation?
			A)
			B)
			C)
			D)


18		The reaction of 3-chloro-2,2-dimethylbutane and sodium iodide yields
			A)	3-iodo-2,2-dimethylbutane.
			B)	2-iodo-3,3-dimethylbutane.
			C)	3-iodo-2,3-dimethylbutane.
			D)	2-iodo-2,3-dimethylbutane.


19		Rank the following in order from most stable to least stable:
			A)	a b c
			B)	a c b
			C)	c b a
			D)	c a b


20		Which substrate will react most readily in the following reaction?
			A)
			B)
			C)
			D)


21		Which of the following is the best reagent to promote an S_N2 reaction?
			A)	^tBuONa/^tBuOH
			B)	^tBuOH/H₂O
			C)	EtONa/EtOH
			D)	EtOH/H₂O


22		Rank the following in order of decreasing reactivity with methanol.
			A)	III>II>IV>I
			B)	IV>I>II>III
			C)	I>IV>II>III
			D)	I>IV>III>II


23		Which compound RX reacts MOST rapidly in an S_N2 reaction?
			A)	2-Bromohexane
			B)	1-Bromo-3-methylhexane
			C)	2-Bromo-2-methylhexane
			D)	3-Bromohexane


24		What is the major product of the following synthesis?
			A)
			B)
			C)
			D)


25		What is the major product of the following synthesis?
			A)
			B)
			C)
			D)


26		Which of the following CANNOT be made in good yield from CH₃CH₂Cl using an S_N2 reaction?
			A)	CH₃CH₂OCH₂CH₃
			B)	CH₃CH₂OC(CH₃)₃
			C)	CH₃CH₂OH
			D)	CH₃CH₂SH


27		Predict the product of the following reaction. CH₃CH₂I + CH₃CH₂OK →
			A)	CH₃CH₂ICH₂CH₃
			B)	CH₃CH₂OCH₂CH₃
			C)	CH₃CH₂CH₂CH₂I
			D)	CH₃CH₂CH₂CH₂O


28		What is the MOST reactive alkyl halide for the following reaction?
			A)
			B)
			C)
			D)

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