AQA a level chemistry paper 2
Study online at https://quizlet.com/_f6thez
1. Explain how carbon dioxide causes global warming (2) 1. C=O bonds in carbon
dioxide absorb infrared
radiation
2. IR radiation emitted by
the earth doesn't escape
from the atmosphere
2. Give the IUPAC name of CH3CH2CH2CH2CH(OH)CN 2-hydroxyhexanenitrile
(1)
3. Describe how you would distinguish between 1. plane polarised light
separate samples of the two isomers of 2 enantiomers would ro-
CH3CH2CH2CH2CH(OH)CN (2) tate the plane in opposite
directions
4. Explain why the reaction of CH3CH2CH2CH2CHO with 1. planar carbonyl group
KCN followed by dilute acid produces a racemic mix- 2. nucleophilic attack from
ture (3) either side
3. with equal probability
5. Draw a structural formula for the diester C6H10O4
6. Draw the structure of the zwitterion formed by pheny-
lalanine (1)
, AQA a level chemistry paper 2
Study online at https://quizlet.com/_f6thez
7. Draw the structure of serine at high pH (1)
8. Draw the structures of both dipeptides formed when
phenylalanine reacts with serine (2)
9. Name and outline a mechanism for the reaction be-
tween CH3CH2COCl and CH3CH2NH2, give the IUPAC
name of the organic product (6)
10. Write an equation for the reaction of conc nitric acid HNO3 + 2H2SO4 -> NO2+
with conc sulphuric acid to form the species that re- + H3O+ + 2HSO4-
acts with nitrobenzene (1)
(allow H2SO4 + HNO3 ->
NO2+ + HSO4- + H2O)
11. Name and outline a mechanism for the reaction of
NO2+ with nitrobenzene to form 1,3-dinitrobenzene
(4)
12.
, AQA a level chemistry paper 2
Study online at https://quizlet.com/_f6thez
State in general terms what determines the distance 1. balance between sol-
travelled by a spot in TLC (1) ubility in moving phase
and retention by station-
ary phase
or
affinity for stationary and
solvent phase
13. Give an equation for the combustion of heptane in an C7H16 + 11O2 -> 7CO2 +
excess of oxygen (1) 8H2O
14. Identify a suitable catalyst for the catalytic cracking of 1. zeolite/aluminium ox-
hexadecane (C16H34) to form heptane (1) ide
Give one condition other than high temperature (1) 2. slight/moderate pres-
Give an equation of the cracking to produce one mole- sure
cule of heptane, one molecule of cyclohexane and one 3. C16H34 -> C7H16 +
other product (1) C6H12 + C3H6
15. Give equations for the propagation steps in the reac- Cl* + CH3CH2CH2CH3 +
tion of butane to form 2-chlorobutane (2) CH3CH2CH*CH3 + HCl
CH3CH2CH*CH3 + Cl2
CH3CH2CHClCH3 + Cl*
16. Explain why a single Cl* can cause the decomposition Cl* + O3 -> ClO* + O2
of many molecules of ozone (3) ClO* + O3 -> Cl* + 2O2
(Use equations) Cl* is regenerated and
causes a chain reaction
in the decomposition of
ozone
17. Give the IUPAC name for CH2(OH)CH(CH3)CH2Br (1) 3-bromo-2-methyl-
propan-1-ol
Study online at https://quizlet.com/_f6thez
1. Explain how carbon dioxide causes global warming (2) 1. C=O bonds in carbon
dioxide absorb infrared
radiation
2. IR radiation emitted by
the earth doesn't escape
from the atmosphere
2. Give the IUPAC name of CH3CH2CH2CH2CH(OH)CN 2-hydroxyhexanenitrile
(1)
3. Describe how you would distinguish between 1. plane polarised light
separate samples of the two isomers of 2 enantiomers would ro-
CH3CH2CH2CH2CH(OH)CN (2) tate the plane in opposite
directions
4. Explain why the reaction of CH3CH2CH2CH2CHO with 1. planar carbonyl group
KCN followed by dilute acid produces a racemic mix- 2. nucleophilic attack from
ture (3) either side
3. with equal probability
5. Draw a structural formula for the diester C6H10O4
6. Draw the structure of the zwitterion formed by pheny-
lalanine (1)
, AQA a level chemistry paper 2
Study online at https://quizlet.com/_f6thez
7. Draw the structure of serine at high pH (1)
8. Draw the structures of both dipeptides formed when
phenylalanine reacts with serine (2)
9. Name and outline a mechanism for the reaction be-
tween CH3CH2COCl and CH3CH2NH2, give the IUPAC
name of the organic product (6)
10. Write an equation for the reaction of conc nitric acid HNO3 + 2H2SO4 -> NO2+
with conc sulphuric acid to form the species that re- + H3O+ + 2HSO4-
acts with nitrobenzene (1)
(allow H2SO4 + HNO3 ->
NO2+ + HSO4- + H2O)
11. Name and outline a mechanism for the reaction of
NO2+ with nitrobenzene to form 1,3-dinitrobenzene
(4)
12.
, AQA a level chemistry paper 2
Study online at https://quizlet.com/_f6thez
State in general terms what determines the distance 1. balance between sol-
travelled by a spot in TLC (1) ubility in moving phase
and retention by station-
ary phase
or
affinity for stationary and
solvent phase
13. Give an equation for the combustion of heptane in an C7H16 + 11O2 -> 7CO2 +
excess of oxygen (1) 8H2O
14. Identify a suitable catalyst for the catalytic cracking of 1. zeolite/aluminium ox-
hexadecane (C16H34) to form heptane (1) ide
Give one condition other than high temperature (1) 2. slight/moderate pres-
Give an equation of the cracking to produce one mole- sure
cule of heptane, one molecule of cyclohexane and one 3. C16H34 -> C7H16 +
other product (1) C6H12 + C3H6
15. Give equations for the propagation steps in the reac- Cl* + CH3CH2CH2CH3 +
tion of butane to form 2-chlorobutane (2) CH3CH2CH*CH3 + HCl
CH3CH2CH*CH3 + Cl2
CH3CH2CHClCH3 + Cl*
16. Explain why a single Cl* can cause the decomposition Cl* + O3 -> ClO* + O2
of many molecules of ozone (3) ClO* + O3 -> Cl* + 2O2
(Use equations) Cl* is regenerated and
causes a chain reaction
in the decomposition of
ozone
17. Give the IUPAC name for CH2(OH)CH(CH3)CH2Br (1) 3-bromo-2-methyl-
propan-1-ol
