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Flashcards in FINAL Deck (19):
1

What is the pKa of cyclopentadiene?

16

conjugate base is aromatic - aromatic stabilisation is significant

2

What is the pKa of but-2-yne?

45+

internal alkyne - the C-H bond is sp- less stablisation of the negative charge

3

What is the pKa of water?

15

4

This is called a(n) __________ group

methoxy

5

This is a(n) _______ disubstituted benzene

ortho

6

This is a(n) _________ disubstituted benzene

meta

7

This is a(n) ________ disubstituted benzene

para

8

This is called a(n) _________ group

hydroxy

9

This is called a(n) ________ group

carbonyl

10

Activating groups are electron ____________ groups

donating

they help stabilise the carbocation

11

Deactivating groups are electron ____________ groups

withdrawing

they destabilise the carbocation

12

This is a(n) ________ group

vinyl

13

This is a(n) _________ group

allyl

14

Activating groups (electron donating groups) direct ___________

ortho/para

15

Deactivating groups (electron withdrawing groups) direct ___________

meta

16

Deactivating groups direct meta. What is the only exception to this rule?

halogens (-X)

they're deactivating but they actually diect ortho/para

17

Activating groups __________ the rate of the reaction whereas deactivating groups ____________ the rate of the reaction

increase

decrease

18

What is the pKa of phenol?

10

19