paper 1 fis

7/24/2019 Paper 1 FIS

1/12

FUREN INTERNATIONAL SCHOOL

UNIT 2 ASSESSMENT

A-LEVEL 18 MONTH

CANDIDATE NAME

CLASS NO.MATRICULATION

NO.

CHEMISTRY

Paper 1 Multiple Choice

JANUARY 2016

50 MINS

Materials: Multiple Choice Answer Sheet

Data Booklet

INSTRUCTION TO CANDIDATES

Write in soft pencil.

Write your name, matriculation number and class on the Answer Sheet in the spaces provided.

There are thirty questions on this paper. Answer ALLquestions.

For each question, there are four possible answers, A, B, C, and D.

Choose the one you consider correct and record your choice in soft pencilon the Multiple Choice

Answer Sheet.

Each correct answer will score one mark. A mark will not be deducted for a wrong answer.

Any rough working should be done in this booklet.

This paper consists of 12printed pages

FUREN INTERNATIONAL SCHOOL

Chemistry Unit 2 Assessment, January 2016

7/24/2019 Paper 1 FIS

2/12

Section A

For each question there are four possible answers, A, B, C, and D. Choose the oneyou consider to

be correct.

1 The mechanism below has been proposed for the reaction of CHCl3 with Cl2.

Step 1: Cl2(g) 2Cl(g) fast

Step 2: Cl(g) + CHCl3(g)CCl3(g) + HCl(g) slow

Step 3: CCl3(g) + Cl(g)CCl4(g) fast

Which of the following rate equations is consistent with this mechanism?

A rate = k[CHCl3][Cl]

B rate = k[CHCl3][Cl2]

C rate = k[CHCl3][Cl2]0.5

D rate =k[CHCl]

[Cl]

2 Consider the following equations.

CH3CH3 CH3CH2 + H H = +412 kJ mol1

CH3CH2 CH2 = CH2 + H H = +168 kJ mol1

What is the enthalpy change of the following reaction?

2 CH3CH2 CH3CH3 + CH2 = CH2

A +412 kJ mol1 B +244kJ mol1 C 244 kJ mol1 D 412 kJ mol1

3 When water freezes, 6.0 kJ mol-1

of heat enthalpy is evolved. What is the entropy change when

54g of water freezes at 00C?

A 66 J K1 B 22 J K1 C 22 J K1 D 66 J K1

2Furen International School


7/24/2019 Paper 1 FIS

3/12

4 Use of the Data Booklet is relevant to this question.

Which statement about the standard enthalpy change of formation of carbon dioxide is

correct?

A It is equal to the standard enthalpy change of combustion of carbon

B It is equal to twice the bond energy of the C=O bondC It is the energy released when 1 mole of carbon dioxide is formed carbon at the

temperature of combustion of carbon

D It is the same for carbon dioxide produced from graphite and from diamond

5 The radius and charge of each of six ions are shown in the table below

Ion A+

B+

C2+

X-

Y-

Z2-

Radius/nm 0.13 0.19 0.14 0.19 0.13 0.14

The ionic solids AY, BX, CZ are of the same lattice type.

What is the correct order of their lattice placing the least exothermic first

A CZ, AY, BX B AY, CZ, BX C BX,AY,CZ D BX,CZ,AY

6 Which of the following reactions will have a negative value?

A CO2(g) + C(s) 2CO(g)

B NH4NO3(s) N2 O (g) + 2H2O(g)

C 2H2O2(aq) 2H2O(l) + 02(g)

D PH3(g) + HI(g) PH4I(s)

7Which of the following reactions can be the bond energy of the C-F bond be determined by

using only the standard enthalpy change of reaction?

A CF4(g) C (g) + 4F(g)

B CF4(g) CF2(g) + F2(g)

C CF4(s) CF4(g)

D 2F2(g) + C(s) CF4 (g)



7/24/2019 Paper 1 FIS

4/12

8 The rate equation for this reaction W + 2X + YZ is given below:

Rate = k[X]2[Y]

If the concentration of W is tripled, the concentration of X is halved and the concentration of Y

is doubled, by what factor Is the rate of reaction being changed?

A 0.5

B 1.0

C 2.0

D 4.0

9 The diagram represents the distribution of molecular kinetic energies within a gas at

temperature T1.

Which of the following statements about lecithin is correct?

A The total number of molecules varies at different temperature

B As the gas is cooled, the maximum of the curve will be displaced to the right

C Raising the temperature increases the proportion of molecules with any given energy.

D At a higher temperature, the proportion of molecules with energies above any given value

increases



7/24/2019 Paper 1 FIS

5/12

10 The use of Data Booklet is relevant to this question.

Hydrazine was used as a fuel for the Messerscdmidt 163 rocket fighter in World War II. It has

the following structure

What is the enthalpy change of atomisation of 1 mol of gaseous hydrazine?

A 550 kJ

B 1720 kJ

C 1970 kJ

D 2554 kJ

11 The kinetics of the reaction between iodine and compound J is investigated.

What conclusions can be drawn from the graphs?

A The reaction is second order with respect to compound J because rate of reaction

increases by four times when its concentration is increased by two times.

B Both iodine and compound J are involved in the rate determining step.

C The reaction is first order with respect to iodine because half-life is constant

D The overall order of the reaction is 1



7/24/2019 Paper 1 FIS

6/12

12 Dinitrogen oxide, N=N=O, burns in ethyne, C2H2the gaseous phase to produce water vapour,

carbon dioxide and nitrogen gases as the only products

5N2O(g) + C2H2(g) H2O (g) + 2CO2(g) + 5 N2(g) H = 1668 kJ mol1

Assuming N=N bond energy in dinitrogen oxide is +418 kJ mol1 what is the nitrogen-oxygen

bond energy in dinitrogen oxide in kJ mol1?

A 382 B 594 C 686 D 1350

13 A piece of zinc foil dissolved completely in 20 cm3of a dilute sulphuric acid solution and the

volume of hydrogen evolved was noted at equal, short time intervals.

Another piece of zinc foil of the same surface area and mass was added to 40 cm3

of the same solution of sulphuric acid.

How will the initial rate of reaction and the total volume of hydrogen evolved in this second

experiment compare to the first experiment.

Initial Rate of Reaction Total volume of H2

A No change Decrease

B No change No change

C Increase No change

D Increase Increase



7/24/2019 Paper 1 FIS

7/12

14 At 1200 K, in the presence of gold wire as a catalyst, dinitrogen oxide, N20, decomposes in a

closed container according to the equation below.

2 N20(g)2 N2(g) + 02 (g)

Time, t/s 0 1030 2360 4230 7430

Partial Pressure of N20 /kPa 25.0 20.0 15.0 10.0 5.0

Which of the following is correct?

A The partial pressure of N20 at any given time is not affected by temperature.

B The reaction is first order with respect to N20.

C The value of the rate constant remains unchanged In the absence of gold.

DThe total pressure at the completion of the reaction cannot be determined from the

above data.

15 Polymerisation is a process in which large number of small molecules (monomers) are joined

together to form long-chain molecules.

Considering that polymerisation is a spontaneous reaction, what are the correct signs of S

and Hfor the process?

A

B +

C +

D + +



7/24/2019 Paper 1 FIS

8/12

16 Red mercury(II) sulphide is used as a red pigment which is known to darken and this has been

ascribed to the equilibrium below.

HgS (red) HgS (black)

At temperature below 400C, red HgSis the stable form of HgS.

Data for each form of HgSare given in the table.

Hf/ kJ mol1 S/ J mol1K1

red 58.2 82.4

black 41.0 108.0

What is the expression for G, in J mol1, for the formation of black HgSfrom red HgSat 450C?

A G = +17.2 723(+25.6)

B G

= +17.2 450(25.6)C G = +17200 450(25.6)

D G = +17200 723(+25.6)

17 When 1 mole of carbon dioxide gas solidifies as dry ice, 25.2 kJ of heat energy is evolved.

The sublimation temperature of carbon dioxide is 78.5C.

What is the entropy change when 132 g of carbon dioxide gas solidifies at this temperature?

A 389 JK1 B 130 JK1 C +130 JK1 D +389 JK1

18 Given the following thermochemical data, calculate the standard enthalpy change of the

reaction, .

Standard enthalpy change of combustion of CH3CCCH3(g) = 2577 kJ mol1

Standard enthalpy change of combustion of carbon = 394 kJ mol1

Standard enthalpy change of combustion of hydrogen = 286 kJ mol1

Standard enthalpy change of formation of CH2CHCH=CH2(g) = +110 kJ mol1

A 253 kJmol1 B 33 kJ mol1 C +33 kJ mol1 D +253 kJ mol1



7/24/2019 Paper 1 FIS

9/12

19 Which one if the following compounds can be resolved into optical isomers?

A (CF3)2CHCH2OH

B (CH3)2C(OH)CH2CH3

C NH2CCl2COOH

D CH3CHClCOOH

20 The structure below represents meso-tartaric acid.

C C

HOOC

HO

H

COOH

OH

H

Which of the following statements explains why this isomer of tartaric acid does notexhibit

optical activity?

A Hydrogen bond formation prevents the molecule from rotating plane-polarised light

B The molecule does not contain any chiral carbon

C The molecule contains a plane of symmetry

D The molecule has a net dipole moment which cancels out the rotation of plane-polarised

light.

21 What are the CCC bond angels found in (CH3)2C=C(CH3)CH2CH3?

A 109only

B 120only

C 109and 120

D 109and 180

22 The compound, CH3CHCHCH(CH3)(C3H7), shows

A Functional group and optical isomerism only

B Optical and chain length isomerism only

C Geometric and optical isomerism only

D Geometric, optical and structural isomerism only



7/24/2019 Paper 1 FIS

10/12

23 Which class of compound has the highest ratio of H atoms to C atoms in its general formula?

A Alcohols

B Aldehydes

C Carboxylic acids

D Halogenoalkanes

24 Which of the following always applies to a nucleophile?

A It attacks a double bond

B It has a lone pair of electrons

C It is a single atom

D It is negatively charged

25 In the molecule shown, which carbon atoms is most readily attacked by an electrophile?

COCH3

H3C CH2Cl

A

C

D



7/24/2019 Paper 1 FIS

11/12

Section B

For each of the questions in this section, one or more of the three numbered statements 1to 3may

be correct.

Decide whether each of the statements is or is not correct (you may find it helpful to put a tick

against the statements that you consider to be correct)

The responses Ato Dshould be selected on the basis of

A B C D

1, 2and 3are

correct

1and 2only are

correct

2and 3only are

correct1only is correct

26 For which of the following reactions does the value of Hrepresent both a standard enthalpy

change of combustion anda standard enthalpy change of formation?

1 C(s) + O2(g) CO2(g)

2 H2(g) +1

2O2(g) H2O(g)

3 N2(g) + 2O2(g) 2NO2(s)

27 The energy profile for a reaction, PR is shown below

1 the mechanism for the reaction is

PQ slow

QR fast

2 the addition of a catalyst changes the value of E2

3 Increasing the temperature decreases the value of E1



7/24/2019 Paper 1 FIS

12/12

28 Consider the following changes:

H1 : M(s) M(g)

H2 : M(s) M2+(g) + 2e

H3 : M(g) M+(g) + e

H4 : M+(g) M2+(g) + e

H5 : M(g) M2+(g) + 2e

The second ionisation energy of M could be calculated from the energy values associated with

1 H1 + H5

2 H5 H3

3 H2 H1 H3

29 Which of the following are necessarilycharacteristic of a compound containing a single carbon

atom with four different groups bonded to it?

1 It will have an optical isomer

2 It will have a chiral centre

3 It will have a structural isomer.

30 The given diagram shows the molecular structure of aureomycin, which is a powerful

antibiotic.

OH

Cl

O

HO CH3

OH

OH

O

C

NH2

O

NH

H3C

CH3

What are the functional groups present in aureomycin?

1 Secondary alcohol

2 Tertiary alcohol

3 Ketone

END OF PAPER



paper 1 fis

Documents