Benzene Flashcards
1
Q
What can benzene be used for?
A
- to make dyes, pharmaceuticals or explosives
2
Q
How doe we know benzene is more stable by looking at the hydrogenation values
A
- energy is put in to break bonds and released when bonds form
- only 208kjmol-1 are released as energy when benzene is hydrogenated where as 360 kJmol-1 are released by cyclohex135triene so more energy is used to break the bonds in benzene
3
Q
What reactions do benzene mainly undergo?
A
- electrophilic substitution
4
Q
What conditions are needed for the electrophilic substitution of benzene and (CH3C=O)+
A
- non aqueous solvent
- reflux
5
Q
What acts as a catalyst in the reaction between benzene and ethanoyl chloride?
A
- AlCl3
6
Q
What is the electrophilic in nitration reactions?
A
NO2 +
7
Q
How doe we get the electrophile for nitration of benzene?
A
- conc H2SO4 and Conc HNO3
8
Q
What is the reaction for the formation of the NO2+ electrophile?
A
HNO3 + 2H2SO4 —> (NO2+) + 2(HSO4-) + (H3O+)
9
Q
What is the structure/name for of TNT?
A
- 1 methyl, 2,4,6 trinitrobenzene
- a benzene with 3 nitro groups and a methyl
