june 2018- paper 2 Flashcards
1
Q
catalytic cracking conditions
A
zeolite catalyst, slight pressure, high temperature
2
Q
2 ways of maximising distillation yield
A
temp. below boiling point of the product not being collected
cool the collecting vessel
3
Q
why does e-z isomerism occur
A
C=C bond can’t rotate
4
Q
benzene bonding features
A
3 covalent bonds per c delocalised electrons overlap in a p orbital planar 120 bond angle equal length C-C bonds`
5
Q
nucleophilic addition-elimination observation
A
steamy fumes
6
Q
how do hydrogen bonds form (2)
A
electron deficient H
attracts lone pair on O/N/F
7
Q
how to draw disulfide bridges
A
solid S-S line
8
Q
why is it better to produce primary amines from nitriles?
A
higher atom economy than with halogenoalkanes
only 1 product is formed
9
Q
propylamine + water
A
CH3CH2CH2NH2 + H2O ⇌ CH3CH2CH2NH3+ + OH–
