AQA A-Level Chemistry Paper 2
Study online at https://quizlet.com/_gc6cfh
1. suggest one rea- experiment not carried out under standard conditions
son why an
experimental val-
ue for enthalpy
of combustion of
methanol is differ-
ent to the value in
a data book.
2. name a technique fractional distillation, isooctane boils first as it has the lowest boiling point, it then
that could be used condenses so it can be collected
to separate isooc-
tane from a mix-
ture of octane and
isooctane. outline
how this technique
separates isooc-
tane from octane.
3. explain how a cata- it increases the rate of reaction by providing an alternative reaction pathway with
lyst works. a lower activation energy.
4. explain why a thin - reduces the amount of metal needed
layer of metals is - increases the surface area
used on honey-
comb ceramic sup-
ports in catalytic
converters.
5. state the name bromine water, solution goes yellow to colourless
of a reagent that
could be used to
, AQA A-Level Chemistry Paper 2
Study online at https://quizlet.com/_gc6cfh
identify an unsat-
urated fatty acid.
state the obser-
vation during this
test.
6. give one reason the bonds vibrate
why bonds in mol-
ecules such as car-
bon dioxide and
1, 1, 1-trifluo-
roethane absorb
infrared radiation.
7. suggest why they prevent the formation of large bubbles
anti-bumping
granules prevent
bumping.
8. explain why an in- it will increase the number of molecules with an energy higher than the activation
crease in tempera- energy, and also increase the rate of successful collisions
ture increases the
rate at which some
gases decompose.
9. explain whether yes, because PVC needs to be flexible
you would expect
to find a plasticis-
er in the PVC used
to insulate electri-
cal cables.
10. nitrogen and oxygen in the air react at a high temperature
Study online at https://quizlet.com/_gc6cfh
1. suggest one rea- experiment not carried out under standard conditions
son why an
experimental val-
ue for enthalpy
of combustion of
methanol is differ-
ent to the value in
a data book.
2. name a technique fractional distillation, isooctane boils first as it has the lowest boiling point, it then
that could be used condenses so it can be collected
to separate isooc-
tane from a mix-
ture of octane and
isooctane. outline
how this technique
separates isooc-
tane from octane.
3. explain how a cata- it increases the rate of reaction by providing an alternative reaction pathway with
lyst works. a lower activation energy.
4. explain why a thin - reduces the amount of metal needed
layer of metals is - increases the surface area
used on honey-
comb ceramic sup-
ports in catalytic
converters.
5. state the name bromine water, solution goes yellow to colourless
of a reagent that
could be used to
, AQA A-Level Chemistry Paper 2
Study online at https://quizlet.com/_gc6cfh
identify an unsat-
urated fatty acid.
state the obser-
vation during this
test.
6. give one reason the bonds vibrate
why bonds in mol-
ecules such as car-
bon dioxide and
1, 1, 1-trifluo-
roethane absorb
infrared radiation.
7. suggest why they prevent the formation of large bubbles
anti-bumping
granules prevent
bumping.
8. explain why an in- it will increase the number of molecules with an energy higher than the activation
crease in tempera- energy, and also increase the rate of successful collisions
ture increases the
rate at which some
gases decompose.
9. explain whether yes, because PVC needs to be flexible
you would expect
to find a plasticis-
er in the PVC used
to insulate electri-
cal cables.
10. nitrogen and oxygen in the air react at a high temperature
