Higher Chemistry 2010 (Section A)

Page 1

1.

2.

Which of the following gaseswould dissolve in water to form an alkali? A

HB r

B

NH ,

C

CO,

D

CHn

6.

A

Magnesium nitrate + sodium chloride

B

Magnesium nitrate + sodium sulphate

C

Silver nitrate + sodium chloride

D

Silver nitrate + sodium sulphate

Graph II could be for

copper(II) sulphate are dissolved together in water and made up to 500 cm' of solution. What is the concentration of Cu2*1aq;ions in the solution in mol l-1?

B

1. 0

c

2 .0

OT

Volume of hydrogen produced

3. 0'5 mol of copper(Il) chloride and 0'5 mol of

0. 5

3"

Graph I refers to this reaction.

Which of the following pairs of solutions is most likely to produce a precipitate when mixed?

A

Excess zinc was added to 100 cm hydrochloric acid, concentration 1 moll-1.

7.

D 4 .0

A

excess zinc reacting with 100 cm3 of I hydrochloric acid, concentration 2 mol l_

B

excess zinc reacting with 100 cm3 of sulphuric acid, concentration 1 mol l-'

C

excess zinc reacting with L00 cm3 of ethanoic acid, concentration 1 mol l-1

D

excessmagnesium reacting with 100cm3 of hydrochloric acid, concentration L moll-'.

Which of the following is not a correct statement about the effect of a catalyst? The catalyst

4.

5.

For any chemical, its temperature is a measure of

A

provides an products

A

the average kinetic energy of the particles that react

B

lowers the energy that molecules need for successfulcollisions

B

the average kinetic particles

C

provides energy so that more molecules have successfulcollisions

C

the activation energy

D

forms bonds with reactins molecules.

D

the minimum kinetic before reaction occurs.

energy of all the

8.

The number of moles of hydrogen iodide formed at I secondswas 0' 2

B 0.+ c

route

to

the

energy required

1 mol of hydrogen gas and 1 mol of iodine vapour were mixed and allowed to react. After I seconds, 0'8 mol of hydrogen remained.

A

alternative

A potential energy diagram can be used to show the activation energy (Ee) and the enthalpy change (AH) for a reaction. Which of the following combinations of Eo and AH could never be obtained for a reaction? A

Ea = 50 kJ mol-1 and AH = -100 kJ mofl

B

Ee = 50kJ mol-l and AH = +100kJ mofl

C

Ea = 100kJ mol-1 and AH = +50kJ mol-l

D

Ee = 100kJ mol-1 and AH = -50kJ mol-1

0'8

D 1 .6. [Turn over

lx0r2l3011

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9.

As the relative atomic mass in the halogens increases A

the boiling point increases

B

the density decreases

C

the first ionisation energy increases

D

the atomic size decreases.

13. Which line in the table shows the correct entries for tetrafluoroethene?

Polar bonds?

10. The table shows the first three ionisation energiesof aluminium.

Ionisation energy/kJ mol-r lst

Znd

584

A

yes

yes

B

yes

no

C

no

no

D

no

yes

J:

':i"

Polar molecules?

''

"

3rd

1830

14. Element X was found to have the following properties.

2760

(i) Using this information, what is the enthalpy change, in kJ mol-l, for the following reaction? Al'*(g) * 2e- -->al*(g)

It does not conduct electricity when solid.

(ii)

It forms a gaseousoxide.

(iii)

It is a solid at room temperature.

A

+2176

Element X could be

B

-2 1 7 6

A

magnesium

C

+4590

B

silicon

D

459A

C

nitrogen

D

sulphur.

11. When two atoms form a non-polar covalent bond, the two atoms must have

15. The Avogadro Constant is the same as the number of

A

the same atomic size

B

the same electronegativity

A

molecules in 16 g of oxygen

C

the same ionisaticin energy

B

D

the same number of outer electrons.

ions in 1 litre of sodium chloride solution. concentration 1 mol l-1

C

atoms in 24 g of carbon

D

molecules in 2 g of hydrogen.

12. In which of the following hydrogen bonding occur?

liquids

does

A

Ethanoic acic

B

Ethyl ethanoate

C

Hexane

A lg o f lH

D

Hex-l-ene

B

16. Which of the following contains one mole of neutrons?

l gof

1u2C

c zgorllvrg D zgorffrN"

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17. 20 cm3 of ammonia gas reacted with an excess

Which of the following structural formulae represents a tertiary alcohol?

of heatedcopper(II) oxide. 3CuO + 2NH, -+ 3Cu + 3HrO + N,

9H, I

Assuming all measurementswere made at 200 oC, what would be the volume of gaseous products? A

10c m3

B

20 cm3

C

30 cm3

D

40cm3

A CHr-9-CHr-OH I CH,

9H, I B CHr-9-CHr-CH, I

,OH

18. Which of the following fuels can be produced

H

by the fermentation of biological material under anaerobic conditions? A

Methane

B

Ethane

C

Propane

D

Butane

c CH, -CHr-CHr-9 -CH, I OH H

I D CH3-CHr-9-CH2-CH3 I

OH

19. Rum flavouring is based on the compound with the formula shown.

,P cH3cH2cH2c \

21. What is the product when one mole of chlorine gas reacts with one mole of ethyne?

ocH2cH3

It can be madefrom A

ethanoland butanoicacid

B

propanol and ethanoic acid

C

butanol and methanoic acid

D

propanol and propanoic acid.

[ x 0 1 2 / 3 01 ]

A

1 ,1-Dichloroethene

B

1,1-Dichloroethane

C

1,2-Dichloroethene

D

1,2-Dichloroethane

[Turn over

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//o

cHr_""r_(

24.

Synthesis gas consists

IH ReactionX I I

Y cHr_cHr_cH2 _ o H I Reaction y I

CHn alone

B

CHo and CO

C

CO and H,

D

CH4, CO and Hr.

25'

'l

ffiru;

Y cH r_

A

Which line in the table correctly describes reactions X and y?

oxidation

usedin themanufacture of addition

What type of r, erhene;;; ;"r*r

_ cHz " r,

., rA B

mainly of

tton is used ro produce

Cracking Addition

C

Oxidation

D

Hydrogenation

dehydration condensation

Polyester fibres and cured polyester resins are both very strons. Which line in tfr" tubl

structure.r ;;." ;;:.::iJ;.nr 23.

Ozone has an i atmosphere b.""fr::rt"nt A B C D

27.

absorbs ultraviolet

role in the upper

describes the

cross-linked

radiation

absorbs certain CFCs reflects ultraviolet radiation reflects crirtain CFCs.

cross-linked

Part of a polymer chain is shown below.

o

lr

3o - o - i - 1cH,;n _ i _ o _ (cHz)o _ o _ f_,""r,_ _ I_ e -- (cH2)6 _ o_

Which of the follouri--

polymer

compounds, ^^__ when addedto the reactants rea rtom g;ttrng;;ilt*hen during porymerisation, "n","?].t^11t"g wourd stop the

o

il3

A Ho_g_(cH2)a_i_-on B Ho_ (cH2)6_ oH

o c Ho-(cH2)s*l_on D cH3 - (cH2)4_ cH, _ oH

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32. 28. Which of the unsaturated?

following

A

CI e H 3 e C OOH

B

C2 1 H 4 3 C O OH

c

c 17 H 3 1 c o o H

D

C1 3 H 2 7 C O OH

fatty

acids

is

Given the equations Mg(s) + 2H+(aq) -+

+ Hr(s)

Mg'*(uq)

AH = aJ mof' Zn(s) + 2H+(aq) -+

Znz*(aq) + Hr(s) 1 AH = bJ mol-'

Mg(.) + Znz+(aq) --> Mg2*(uq) + Zn(s) AH = cJ mol-' then, according to Hess's Law

29. Which of the following alcohols is likely to be obtained on hydrolysis of butter? A B

CH r-C H r-C H 2 -O H

A

c=

a-b

B

c=

a+ b

C

c=

D

c= -b-a.

b-a

.t l:

CH r-C H -C H 3

I

33.

OH cH2 - oH I

c cH, tcH2 -

oH

cH2 - oH I D CH -OH

34.

I cH2 - oH

In which of the following reactions would an increase in pressure cause the equilibrium position to move to the left? A

CO(e) + HrO(g)

B

CHn(s) + HrO(g)

==

C

-FerOr(s) + 3CO(g) .^

D

Nr(s) +:Hr(e)

.-

COr(g) + H2(c) CO(e) + 3Hr(g) 2Fe(s)+ 3COr(g) 2NH3(s)

If ammonia is added to a solution containing copper(II) ions an equilibrium is set up.

Cu2*(aq;+ 2OH-(aq) + 4NHr(ao)-Cu(NH3)a(OH)r(aq) (deep blue)

30. Amino acids are converted into proteins by A

hydration

B

hydrolysis

C

hydrogenation

D

condensation.

If acid is added to this equilibrium system

31 . Which of the following compounds is a raw material in the chemical industry?

A

the intensity of the deep blue colour will lncrease

B

the equilibrium position will move to the right

C

the concentration of Cu2*(aq) ions will increase

D

the equilibrium affected.

position

will

not

be

A

Ammonia

B

Calcium carbonate

C

Ffexane

Which of the following is the best description of a 0'1 mol l-1 solution of hydrochloric acid?

D

Nitric acid

A

Dilute solution of a weak acid

B

Dilute solution of a strong acid

C

Concentrated solution of a weak acid

D

Concentrated solution of a strong acid

35.

[Turn over

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36.

A solution has a negative pH value. This solution

39. In which reaction is hydrogen gas acting as an oxidising agent?

A

neutralises H+(aq) ions

A Hz + c u o -+ H2 o + c u

B

contains no OH-(aq) ions

B

H2+ C2H4-+ CrHu

C

has a high concentration of H+(aq) ions contains neither H*(uq) ions nor OHlaq)

C

Hz + Clz + 2HCl

D

Hz + 2Na -+ 2NaH

D

1 0 n s.

37. When a certain aqueous solution is diluted, its conductivity constant.

decreases but its pH

remains

It could be A

ethanoic acid

B

sodium chloride

C

sodium hydroxide

D

nitric acid.

40. Which particle will be formed when an atom .f '?j,lni emits an d-particle and the decay product then emits a B_particle?

a ' ' o lva

B 'X1"' c '!3r* D ')l^"

38. Equal volumes of four 1 mol l-1 solutions were compared.

Which of the following contains the most ions? A

Nitric acid

B

Hydrochloric acid

C

Ethanoic acid

D

Sulphuric acid

1 mol l-1 solutions

candidates are reminded that the answer sheet Musr be rerurned TN'IDE the front cover of this answer " b;;;.--

1X012/301J

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