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CHEM 351 Nucleophile/base

Total questions: 47

Worksheet time: 47mins

Name
Class
Date
1.

What is NaH

a)

Strong base/strong nucleophile

b)

Strong base/weak nucleophile

c)

Weak base/strong nucleophile

d)

Weak base/weak nucleophile

2.

What is tBuO- ?

a)

Strong base/weak nucleophile

b)

strong base/strong nucleophile

c)

weak base/ strong nucleophile

d)

weak base/ weak nucleophile

3.

What is DBN?

a)

Strong base/strong nucleophile

b)

weak base/strong nucleophile

c)

strong base/weak nucleophile

d)

weak base/weak nucleophile

4.

What is DBU?

a)

weak base/weak nucleophile

b)

strong base/strong nucleophile

c)

weak base/strong nucleophile

d)

strong base/weak nucleophile

5.

What is H- ?

a)

weak base/weak nucleophile

b)

strong base/strong nucleophile

c)

weak base/strong nucleophile

d)

strong base/weak nucleophile

6.

A strong base/weak nucleophile proceeds in a ___ reaction

a)

generally only SN1

b)

generally only a SN2

c)

generally only E2

d)

generally only an E1

7.

What is RO- ?

a)

strong base/weak nucleophile

b)

weak base/weak nucleophile

c)

strong base/strong nucleophile

d)

weak base/strong nucleophile

8.

What is HO- ?

a)

strong base/weak nucleophile

b)

weak base/weak nucleophile

c)

strong base/strong nucleophile

d)

weak base/strong nucleophile

9.

What is MeO- ?

a)

strong base/weak nucleophile

b)

weak base/strong nucleophile

c)

weak base/weak nucleophile

d)

strong base/strong nucleophile

10.

What is EtO- ?

a)

strong base/weak nucleophile

b)

weak base/strong nucleophile

c)

weak base/weak nucleophile

d)

strong base/strong nucleophile

11.

What are strong base/strong nucleophiles used for?

a)

E2 and E1

b)

SN2 and SN1

c)

SN2 and E2

d)

SN1 and E1

e)

E1 and SN2

12.

What is NaI?

a)

strong base/weak nucleophile

b)

strong base/strong nucleophile

c)

weak base/weak nucleophile

d)

weak base/strong nucleophile

13.

What is I- ?

a)

weak base/strong nucleophile

b)

strong base/weak nucleophile

c)

strong base/strong nucleophile

d)

weak base/weak nucleophile

14.

What is Br- ?

a)

weak base/strong nucleophile

b)

strong base/weak nucleophile

c)

strong base/strong nucleophile

d)

weak base/weak nucleophile

15.

What is Cl- ?

a)

Strong base/strong nucleophile

b)

Strong base/weak nucleophile

c)

Weak base/strong nucleophile

d)

Weak base/weak nucleophile

16.

What is RS- ?

a)

Weak base/strong nucleophile

b)

Strong base/strong nucleophile

c)

Strong base/weak nucleophile

d)

Weak base/weak nucleophile

17.

What is RSH ?

a)

Weak base/strong nucleophile

b)

Strong base/weak nucleophile

c)

Weak base/weak nucleophile

d)

Strong base/strong nucleophile

18.

What is H2S ?

a)

Weak base/strong nucleophile

b)

Weak base/weak nucleophile

c)

Strong base/strong nucleophile

d)

Strong base/weak nucleophile

19.

What is CH3COH ?

a)

Weak base/strong nucleophile

b)

Weak base/weak nucleophile

c)

Strong base/strong nucleophile

d)

Strong base/weak nucleophile

20.

What is H2O ?

a)

Weak base/strong nucleophile

b)

Strong base/strong nucleophile

c)

Weak base/weak nucleophile

d)

Strong base/weak nucleophile

21.

What is MeOH ?

a)

Weak base/strong nucleophile

b)

Weak base/weak nucleophile

c)

Strong base/weak nucleophile

d)

Strong base/strong nucleophile

22.

What is EtOH ?

a)

Weak base/weak nucleophile

b)

Weak base/strong nucleophile

c)

Strong base/weak nucleophile

d)

Strong base/strong nucleophile

23.

What are weak base/strong nucleophiles used for?

a)

SN1 or E1

b)

SN2 or E2

c)

Substitution only

d)

elimination only

24.

What are weak base/weak nucleophiles used for?

a)

SN1 or E2

b)

E2 or SN2

c)

substitution only

d)

elimination only

e)

E1 or SN1

25.

If you have a primary substrate and a strong base/weak nucleophile, you can expect the reaction to proceed as ____.

a)

SN1

b)

E1

c)

SN2

d)

E2

e)

SN2/E2

26.

If you have a secondary substrate and a strong base/weak nucleophile, you can expect the reaction to proceed as ____.

a)

E2

b)

SN2

c)

E1

d)

SN1

27.

If you have a tertiary substrate and a strong base/weak nucleophile, you can expect the reaction to proceed as ____.

a)

SN1

b)

E1

c)

SN2

d)

E2

28.

If you have a primary substrate and a strong base/strong nucleophile, you can expect the reaction to proceed as ____.

a)

SN1 mostly and E1

b)

E2 mostly and SN1

c)

SN2 mostly and E2

d)

E2 mostly and SN2

29.

If you have a secondary substrate and a strong base/strong nucleophile, you can expect the reaction to proceed as ____.

a)

SN1 mostly and E1

b)

E2 mostly and SN1

c)

SN2 mostly and E2

d)

E2 mostly and SN2

30.

If you have a tertiary substrate and a strong base/strong nucleophile, you can expect the reaction to proceed as ____.

a)

SN1 mostly and E1

b)

E2

c)

SN2 mostly and E2

d)

SN2

31.

If you have a primary substrate and a weak base/strong nucleophile, you can expect the reaction to proceed as ____.

a)

SN1

b)

SN2

c)

E1

d)

E1

32.

If you have a secondary substrate and a weak base/strong nucleophile, you can expect the reaction to proceed as ____.

a)

SN1

b)

E1

c)

SN2

d)

E2

33.

If you have a tertiary substrate and a weak base/strong nucleophile, you can expect the reaction to proceed as ____.

a)

SN2

b)

E2

c)

E1

d)

SN1

34.

If you have a primary or secondary substrate and a weak base/weak nucleophile, you can expect the reaction to proceed as ____.

a)

SN2

b)

E2

c)

SN1

d)

E1

e)

Unlikely reaction

35.

If you have a tertiary substrate and a weak base/weak nucleophile, you can expect the reaction to proceed as ____.

a)

SN1 and E1

b)

SN2 and E2

c)

SN1 and E2

d)

SN2 and E1

36.

Cyanide is a ____.

a)

Weak base/strong nucleophile

b)

strong base/weak nucleophile

c)

Moderate base/strong nucleophile

d)

Strong base/moderate nucleophile

37.

SN1 reactions occur faster in _____ solvents.

a)

Polar aprotic

b)

Polar protic

38.

SN2 reactions occur faster in _____ solvents.

a)

Polar protic

b)

Polar aprotic

39.

A carboxylic acid is a _____ solvent

a)

Polar protic

b)

polar aprotic

40.

An alcohol is a ____ solvent

a)

polar protic

b)

polar aprotic

41.

tBuOH is a _____ solvent.

a)

polar protic

b)

polar aprotic

42.

NH3 is a _____ solvent.

a)

polar protic

b)

polar aprotic

43.

H2O is a _____ solvent.

a)

polar protic

b)

polar aprotic

44.

Acetone is a _____ solvent

a)

polar protic

b)

polar aprotic

45.

An amide is a _____ solvent

a)

polar protic

b)

polar aprotic

46.

acetonitrile is a _____ solvent

a)

polar protic

b)

polar aprotic

47.

Sulfoxide is a ______ solvent.

a)

polar protic

b)

polar aprotic

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