2

1 In this question Q is used to represent a halogen atom.

Magnesium and calcium each form a compound with chlorine and a compound with bromine.
Cambridge International AS & A Level One of these compounds contains:

● the element in Group 2 with the higher first ionisation energy and
CHEMISTRY 9701/11
Paper 1 Multiple Choice October/November 2024 ● the element in Group 17 with the higher Q–Q bond energy.

1 hour 15 minutes What is the formula of this compound?

You must answer on the multiple choice answer sheet. A MgCl 2 B MgBr2 C CaCl 2 D CaBr2
*7791090199*

You will need: Multiple choice answer sheet

Soft clean eraser 2 Compound X contains two elements, Y and Z.
Soft pencil (type B or HB is recommended)
Element Y is in Period 2 of the Periodic Table. In one atom of element Y, the p sub-shell has all
INSTRUCTIONS three orbitals occupied; only one of these three orbitals is fully occupied.
 There are forty questions on this paper. Answer all questions.
 For each question there are four possible answers A, B, C and D. Choose the one you consider correct Element Z is in Period 3 of the Periodic Table. In one atom of element Z, the p sub-shell has only
and record your choice in soft pencil on the multiple choice answer sheet. two orbitals occupied.
 Follow the instructions on the multiple choice answer sheet.
 Write in soft pencil. What is the formula of compound X?
 Write your name, centre number and candidate number on the multiple choice answer sheet in the
spaces provided unless this has been done for you. A CCl 4 B SiCl 4 C SiO2 D SO2
 Do not use correction fluid.
 Do not write on any bar codes.
 You may use a calculator. 3 Glauber’s salt consists of crystals of hydrated sodium sulfate, Na2SO4•xH2O, which can be used
for the manufacture of detergents.

INFORMATION When a sample of Glauber’s salt was heated, 1.91 g of water was removed leaving 1.51 g of
 The total mark for this paper is 40. anhydrous Na2SO4.
 Each correct answer will score one mark.
 Any rough working should be done on this question paper. What is the value of x in Na2SO4•xH2O?
 The Periodic Table is printed in the question paper.
A 1 B 8.85 C 10 D 11.25
 Important values, constants and standards are printed in the question paper.

4 What contains the greatest number of the named particles?

A 6.0 dm3 of argon atoms at room conditions

B 6.0 g of carbon dioxide molecules
C 6.0 g of magnesium atoms
D 6.0 g of water molecules

This document has 20 pages. Any blank pages are indicated.

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5 Phosphorus forms a compound with hydrogen called phosphine, PH3. This compound can react 7 The element tin exists in two forms, grey tin and white tin.
with a hydrogen ion, H+.
Some properties of grey tin and white tin are shown.
Which type of interaction occurs between PH3 and H+?
grey tin white tin
A dative covalent bond
B dipole–dipole forces boiling point / K 2543 2533
electrical conductivity none in solid or liquid good in solid and liquid
C hydrogen bond
malleability brittle malleable
D ionic bond
Which structural change might take place when grey tin changes to white tin?
6 The graphs show trends in four physical properties of elements in Period 3, excluding argon.
A giant covalent to giant ionic
Which graph has electronegativity on the y-axis? B giant covalent to giant metallic

A B C giant ionic to giant covalent

D giant ionic to giant metallic

8 Which solid has a simple molecular lattice?

A calcium fluoride
B nickel

Na Mg Al Si P S Cl Na Mg Al Si P S Cl C silicon(IV) oxide
D sulfur

C D
9 The standard enthalpy change of combustion of carbon is –394 kJ mol–1.

The standard enthalpy change of combustion of hydrogen is –286 kJ mol–1.

The standard enthalpy change of formation of butane is –129 kJ mol–1.

What is the standard enthalpy change of combustion of butane?

A –551 kJ mol–1
Na Mg Al Si P S Cl Na Mg Al Si P S Cl B –2877 kJ mol–1
C –3135 kJ mol–1
D –4307 kJ mol–1

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10 Three processes are described. 13 When 0.20 mol of hydrogen gas and 0.15 mol of iodine gas are heated at 723 K until equilibrium is
established, the equilibrium mixture contains 0.26 mol of hydrogen iodide.
1 H+(aq) + OH–(aq)  H2O(l)
The equation for the reaction is as follows.
2 CH4(g) + 2O2(g)  CO2(g) + 2H2O(l)
H2(g) + I2(g) 2HI(g)
3 NH3(g)  NH3(l)
What is the correct expression for the equilibrium constant Kc?
Which statement is correct?
2  0.26 (2  0.26)2 (0.26) 2 (0.26) 2
A None of the processes have a positive enthalpy change. A B C D
0.20  0.15 0.20  0.15 0.07  0.02 0.13  0.13
B Only process 1 has a positive enthalpy change.
C Only process 2 has a positive enthalpy change. 14 In acidic conditions, iodine reacts with propanone in a substitution reaction.
D Only process 3 has a positive enthalpy change.
CH3COCH3(aq) + I2(aq)  CH3COCH2I(aq) + HI(aq)

11 In alkaline solution, MnO4– ions oxidise SO32– ions to SO42– ions. The MnO4– ions are reduced to The kinetics of the reaction are investigated using a colorimeter. As the I2 reacts, the
MnO2. yellow / brown colour of the I2(aq) fades to colourless, changing the absorbance of the solution.
Known concentrations of I2(aq) are used to prepare a calibration curve graph and the absorbance
What is the ratio of the two ions in the balanced chemical equation for this reaction? is then measured as the reaction proceeds.

calibration curve using known

MnO4– SO32–
concentrations of I2(aq) absorbance during reaction
A 2 3 0.30 0.6
B 3 2 0.25 0.5
concentration 0.20 0.4
C 4 7 of iodine 0.15 absorbance 0.3
u 10–3 mol dm–3 0.10 0.2
D 7 4
0.05 0.1
0 0
12 Lithium reacts with nitrogen at room temperature to form solid Li3N. 0 0.1 0.2 0.3 0.4 0.5 0.6 0 20 30 40 50 60
absorbance time / s
Three vessels of equal volume are connected by taps 1 and 2 as shown.
What is the rate of reaction at 20 s?

A 5  10–6 mol dm–3 s–1

evacuated N2(g) + 3H2(g) 2NH3(g)
1 2
Li B 1  10–5 mol dm–3 s–1

C 5  10–3 mol dm–3 s–1

At the start, taps 1 and 2 are closed, the left-hand vessel is evacuated, the middle vessel has the
indicated reaction at equilibrium and the right-hand vessel contains lithium only. D 1  10–2 mol dm–3 s–1

Which action would allow the equilibrium mixture to contain the most ammonia?

A Keep both taps 1 and 2 closed.

B Open both taps 1 and 2.
C Open tap 1 only.
D Open tap 2 only.

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15 The diagram shows a Boltzmann distribution curve. 17 Elements X and Y are in Period 3 of the Periodic Table. Element X is either phosphorus or sulfur.
Element Y is either sodium or magnesium.
The axes are not labelled.
Element X forms an oxide that reacts with water to give a solution containing the aqueous anion
XO42–.
point Y
One mole of element Y reacts with one mole of chlorine molecules. At the end of the reaction, all
of the element Y and all of the chlorine molecules have been used up.

What are elements X and Y?

point X X Y
EA
A phosphorus sodium
Points X and Y are points on the vertical axis. B phosphorus magnesium

What is represented by both points X and Y? C sulfur sodium

D sulfur magnesium
point X point Y
A number of molecules largest number of molecules
18 Q is a semi-conductor. The chloride of Q reacts with water to form white fumes and an acidic
with energy equal to EA with the same energy
solution.
B number of molecules with largest number of molecules
energy equal to or greater than EA with the same energy Which Period 3 element is Q?

C number of molecules the amount of energy of the A magnesium

with energy equal to EA greatest number of molecules
B aluminium
D number of molecules with the amount of energy of the
energy equal to or greater than EA greatest number of molecules C silicon
D phosphorus

16 What are the acid–base nature and structure of SO2?

19 V and W are two compounds. Each one contains a different Group 2 element.
acid–base nature structure
A sample of each solid is added to water, shaken, and the pH of the resulting solution is
A acidic giant covalent lattice measured.

B acidic simple molecular

compound V W
C basic giant covalent lattice
pH 13.6 9.4
D basic simple molecular
Which row could identify V and W?

V W

A BaSO4 MgSO4
B MgSO4 BaSO4
C Ba(OH)2 Mg(OH)2
D Mg(OH)2 Ba(OH)2

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20 Compound L decomposes on heating. One of the products is gas M. 24 Three statements about ammonia molecules and ammonium ions are given.

M reacts with unburned hydrocarbons to form peroxyacetyl nitrate, PAN. 1 In aqueous solution, ammonia molecules form coordinate bonds with hydroxide
ions.
What could be the formula of L?
2 Ammonium ions are Brønsted–Lowry acids.
A CaNO3 B Ca(NO3)2 C MgCO3 D Mg(CO3)2
3 The H–N–H bond angle is larger in the ammonium ion than in the ammonia
molecule.
21 In reaction 1, concentrated sulfuric acid is added to potassium chloride and the fumes produced
Which statements are correct?
are bubbled into aqueous potassium iodide solution.
A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3
In reaction 2, potassium chloride is dissolved in aqueous ammonia and this is then added to
aqueous silver nitrate.
25 Ethene reacts with steam in the presence of sulfuric acid.
What are the observations for reactions 1 and 2?
C2H4 + H2O  CH3CH2OH
observation for observation for
reaction 1 reaction 2 Which type of reaction is this?

A brown solution colourless solution A acid–base

B brown solution white precipitate B addition
C colourless solution colourless solution C hydrolysis
D colourless solution white precipitate D substitution

22 The table refers to the hydrogen halides. 26 Compound Z has the molecular formula C4H8O2.

Which row is correct? Compound Z reacts with propan-1-ol in the presence of concentrated H2SO4.

oxidation thermal stability The diagram shows the skeletal formulae of three compounds, S, T and U.

A easier to oxidise down the group increases down the group S T U

B more difficult to oxidise down the group increases down the group O O O

C easier to oxidise down the group decreases down the group O O O

D more difficult to oxidise down the group decreases down the group
What are the possible skeletal formulae of the products of the reaction between compound Z and
propan-1-ol?
23 7.5 g of nitrogen monoxide reacts with 7.0 g of carbon monoxide on the surface of the catalytic
A S and T B U only C S and U D T only
converter in the exhaust system of a car.

What is the total volume of the product gases measured at room conditions?

A 3.0 dm3 B 6.0 dm3 C 9.0 dm3 D 12.0 dm3

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27 Geraniol and nerol are isomers of each other. 29 Vitamin A contains retinol.

geraniol nerol retinol

CH3 CH3

C CH2OH C H
OH
H 2C C H 2C C
H CH2OH
H 3C H2C H 3C H 2C
Under appropriate conditions, acidified KMnO4(aq) can be used to break C=C bonds.
C C C C
After these bonds have been broken, further oxidation of the fragments may occur.
H 3C H H 3C H
Under which conditions is the acidified KMnO4(aq) used and what do the final oxidation products
Which type of isomerism is shown here? include?

A chain conditions final oxidation products

B geometrical (cis / trans) A cold, dilute aldehydes and carboxylic acids
C optical B cold, dilute ketones and carboxylic acids
D positional C hot, concentrated aldehydes and carboxylic acids
D hot, concentrated ketones and carboxylic acids
28 Which compound has the greatest number of stereoisomers?

A 2-methylhex-2-ene 30 The structure of limonene is shown.

B 3-methylhex-2-ene limonene
C 4-methylhex-2-ene
D 5-methylhex-2-ene

What are the number of moles of carbon dioxide and water produced when a sample of limonene
is completely combusted in oxygen?

number of moles number of moles

of carbon dioxide of water

A 4 3
B 5 4
C 5 8
D 9 7

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31 The reaction of chlorine with methane is carried out in the presence of light. 35 Which alcohol gives only one possible oxidation product when warmed with dilute acidified
potassium dichromate(VI)?
What is the function of the light?
A butan-1-ol
A to break the C–H bonds in methane
B butan-2-ol
B to break the chlorine molecules into atoms
C 2-methylpropan-1-ol
C to break the chlorine molecules into ions
D 2-methylpropan-2-ol
D to heat the mixture

36 Which compound, on reaction with hydrogen cyanide, produces a compound with a chiral centre?
32 When X is added to NaOH(aq) and heated under reflux, pentan-2-ol is made.
A CH3CHO
Which organic product is made when X is heated with a solution of KCN dissolved in ethanol?
B CH3CH2COCH2CH3
A B C D C CH3CO2CH3
CN CN CN D HCHO
CN
37 The diagram shows three reactions of ethanal. In each case, an excess of ethanal is used.
33 1-chlorobutane and 1-iodobutane both react with aqueous sodium hydroxide by a nucleophilic solid 2
substitution mechanism.

Which reaction has the greatest rate under the same conditions and which mechanism is alkaline I2(aq)
followed by this reaction? heat

greatest rate mechanism

acidified K2Cr2O7 ethanal Fehling’s solution
A 1-chlorobutane SN1 solution 1 solid 3
heat CH3CHO boil
B 1-chlorobutane SN2
Observations are made after each of the three reactions.
C 1-iodobutane SN1
D 1-iodobutane SN2 What are the colours of solution 1 and solids 2 and 3?

solution 1 solid 2 solid 3

34 Compound Y reacts with alkaline I2(aq). When the products of this reaction are acidified, a
A green yellow silver mirror
dicarboxylic acid is produced. The formula of the dicarboxylic acid is HOOC–R–COOH where R
consists of one or more CH2 groups. B green yellow red

Which compound is Y? C orange red silver mirror

A pentan-1,4-diol D orange red red

B pentan-1,5-diol
C pentan-2,3-diol
D pentan-2,4-diol

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38 (CH3)3CCN reacts to form alcohol Y via the reaction sequence shown. 40 The diagram shows the mass spectrum of a sample of chlorine. Peaks V, W, X, Y and Z are
labelled.
H+(aq) LiAl H4
(CH3)3CCN X alcohol Y 100
reaction 1 reaction 2 X
V
Which row names the molecule X and the class of alcohol Y? 80
Y
name of molecule X class of alcohol Y 60
relative
A 2,2-dimethylbutanoic acid primary intensity
40
B 3,3-dimethylbutanoic acid tertiary W
C dimethylpropanoic acid primary 20
Z
D dimethylpropanoic acid tertiary
0.0
30 40 50 60 70 80
39 The diagram shows a section of an addition polymer. The polymer is made using two different m/e
monomers.
Which statements about this spectrum are correct?
H Cl H CH3 H Cl H CH3
1 The relative atomic mass of chlorine can be calculated from the abundances and
m / e values of 2 of the 5 peaks.
C C C C
C C C C C 2 37.0 g of the species responsible for peak Z contains 3.011  1023 molecules.
3 The relative molecular mass of chlorine can be calculated from the abundances and
Cl CH3 CH3 Cl Cl CH3 CH3 Cl Cl CH3 m / e values of peaks X, Y and Z.

A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

What are the names of the two monomers needed to make this polymer?

A 1,2-dichloropropene and 2-chlorobut-2-ene

B 2,3-dichlorobut-2-ene and chloropropene
C 1,2-dichloropropene and chloroethene
D chloropropene and 2-chlorobut-2-ene

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