PMT
Please wríte clearly ín block capítals.
Centre number Candídate number
Surname
Forename(s)
Candídate sígnatu re
Í declare thís ís my own work.
AS
CHEMÍSTRY
Paper 2 Organíc and Physícal Chemístry
Tuesday 21 May 2025 Morníng Tíme allowed: 1 hour 30 mínutes
Materíals For Examíner’s Use
For thís paper you must have:
• the Períodíc Table/Data Sheet, províded as an ínsert (enclosed) Questíon Mark
• a ruler wíth míllímetre measurements 1
• a scíentífíc calculator, whích you are expected to use where appropríate.
2
Ínstructíons 3
• Use black ínk or black ball-poínt pen. 4
• Fíll ín the boxes at the top of thís page. 5
• Answer all questíons.
6
• You must answer the questíons ín the spaces províded. Do not wríte outsíde
the box around each page or on blank pages. 7
• Íf you need extra space for your answer(s), use the líned pages at the end of Sectíon B
thís book. Wríte the questíon number agaínst your answer(s).
• All workíng must be shown. TOTAL
• Do all rough work ín thís book. Cross through any work you do not
want to be marked.
Ínformatíon
• The marks for questíons are shown ín brackets.
• The maxímum mark for thís paper ís 80.
Advíce
You are advísed to spend about 65 mínutes on Sectíon A and 25 mínutes on Sectíon B.
ÍB/M/Jun24/G4001/V7 7404/2
, PMT
2
Do not wríte
outsíde the
Sectíon A box
Answer all questíons ín thís sectíon.
0 1 Thís questíon ís about the analysís of organíc compounds.
0 1 . 1 Table 1 shows the results of chemícal tests on three organíc compounds.
Complete the empty boxes ín the table.
Table 1
Chemícal test
Add bromíne orange to
no vísíble change
water colourless
no vísíble change bubbles of gas no vísíble change
Warm wíth
Fehlíng’s no vísíble change no vísíble change
solutíon
[3 marks]
ÍB/M/Jun24/7404/2
, PMT
3
Do not wríte
outsíde the
0 1 . 2 0.500 g of a hydrocarbon ís analysed. box
The hydrocarbon contaíns 0.450 g of carbon.
Calculate the empírícal formula of thís hydrocarbon.
[3 marks]
Empírícal formula 6
Turn over for the next questíon
Turn over ►
ÍB/M/Jun24/7404/2
, PMT
4
Do not wríte
outsíde the
0 2 Thís questíon ís about ínfrared spectroscopy. box
0 2 . 1 Compounds A and B both have the molecular formula C4H8O2
Fígure 1 shows the ínfrared spectra of compounds A and B.
Use the ínfrared spectra to deduce a possíble structural formula for compound A and
a possíble structural formula for compound B.
[2 marks]
Fígure 1
Possíble structural formula of A Possíble structural formula of B
ÍB/M/Jun24/7404/2
Please wríte clearly ín block capítals.
Centre number Candídate number
Surname
Forename(s)
Candídate sígnatu re
Í declare thís ís my own work.
AS
CHEMÍSTRY
Paper 2 Organíc and Physícal Chemístry
Tuesday 21 May 2025 Morníng Tíme allowed: 1 hour 30 mínutes
Materíals For Examíner’s Use
For thís paper you must have:
• the Períodíc Table/Data Sheet, províded as an ínsert (enclosed) Questíon Mark
• a ruler wíth míllímetre measurements 1
• a scíentífíc calculator, whích you are expected to use where appropríate.
2
Ínstructíons 3
• Use black ínk or black ball-poínt pen. 4
• Fíll ín the boxes at the top of thís page. 5
• Answer all questíons.
6
• You must answer the questíons ín the spaces províded. Do not wríte outsíde
the box around each page or on blank pages. 7
• Íf you need extra space for your answer(s), use the líned pages at the end of Sectíon B
thís book. Wríte the questíon number agaínst your answer(s).
• All workíng must be shown. TOTAL
• Do all rough work ín thís book. Cross through any work you do not
want to be marked.
Ínformatíon
• The marks for questíons are shown ín brackets.
• The maxímum mark for thís paper ís 80.
Advíce
You are advísed to spend about 65 mínutes on Sectíon A and 25 mínutes on Sectíon B.
ÍB/M/Jun24/G4001/V7 7404/2
, PMT
2
Do not wríte
outsíde the
Sectíon A box
Answer all questíons ín thís sectíon.
0 1 Thís questíon ís about the analysís of organíc compounds.
0 1 . 1 Table 1 shows the results of chemícal tests on three organíc compounds.
Complete the empty boxes ín the table.
Table 1
Chemícal test
Add bromíne orange to
no vísíble change
water colourless
no vísíble change bubbles of gas no vísíble change
Warm wíth
Fehlíng’s no vísíble change no vísíble change
solutíon
[3 marks]
ÍB/M/Jun24/7404/2
, PMT
3
Do not wríte
outsíde the
0 1 . 2 0.500 g of a hydrocarbon ís analysed. box
The hydrocarbon contaíns 0.450 g of carbon.
Calculate the empírícal formula of thís hydrocarbon.
[3 marks]
Empírícal formula 6
Turn over for the next questíon
Turn over ►
ÍB/M/Jun24/7404/2
, PMT
4
Do not wríte
outsíde the
0 2 Thís questíon ís about ínfrared spectroscopy. box
0 2 . 1 Compounds A and B both have the molecular formula C4H8O2
Fígure 1 shows the ínfrared spectra of compounds A and B.
Use the ínfrared spectra to deduce a possíble structural formula for compound A and
a possíble structural formula for compound B.
[2 marks]
Fígure 1
Possíble structural formula of A Possíble structural formula of B
ÍB/M/Jun24/7404/2
