NUMBER OF QUESTIONS. z SPM 2012 Question 13

PAPER

1

SUBTOPIC

NUMBER OF QUESTIONS

2011 2012 2013 2014 2015 2016 2017

3.1

Redox Reactions 1 A z z

3.2

Rusting as a Redox Reaction 1 1 1 1 1

3.3

The Reactivity Series of Metals

and lts Application z 2 1 2 1

3.4

Electrolytic and Chemical Cells 1 1

![

Redox Reactions

SPM 2011 Question 49

I

What

is

the

oxidation

number

of

the

chromium element in potassium dichromate(Vl),

_\CrrOr?

Berapakah

nombor

pengol<sidaan

bagi

ut sur kromium dalam kalium dikromat(Y

l)

_\Cr

_{rO r?}

A+2

B+3

c+5

D+6

SPM 2012 Question 4

2

Which

set

of

definition

of

oxidation

in

terms

of

oxygen, hydrogen and electron is conect?

Set manakah

bagi

definisi pengol<sidaan

dari

segi oksigen, hidrogen dan elektron adalah

benf'!

Oxygen Oksigen Hydrogen Hidrogen Electrons Elektron Gain Penerimaan Loss Kehilangan Loss Kehilangan Gain Penerimaan Loss Kehilangan Gain Penerimaan Loss Kehilangan Gain Penerimaan Gain Penerimaan Loss Kehilangan Gain Penerimaan Loss Kehilangan SPM 2012

Question

13

3

Iron(II)

ions, Fe2*

in

a solution can be changed to iron

(III)

ions, Fe3* by adding solution

X.

What is X?

Ion

_ferum(ll),

F€*

dalam

larutan

boleh

ditukar kepada ion

_ferum(lll),

Fe3* dengan menambahknn

larutanX.

ApalahX?

A

Sodiumhydroxide Natrium hidroksida

B

Sodium thiosulphate Natrium tiosulfat

C

Potassiumhexacyanoferrate(Il) Ka I ium heks as ianofer

at(ll)

D

Acidifiedpotassiummanganate(Ml)

Ka I ium m an gana

t{YlI)

b e ras i

d

SPM 2012 Question 21

4

The

following ionic

equation shows

the

reaction between zinc and acid.

Zn(s)

+

2H.(aq)

_-

Z*t(ail+Hr(S)

What

is

the

change

in

oxidation number

of

hydrogen?

Persamaan

ion

berilut

menunjukkan tindak balas antara zink dengan asid.

Zn(p)

+

Z}I*(ak)nZfi*(ak)

+Hr(g)

Apakah

perubahan

nombor

pengol<sidaan hidrogen?

A

C

D

A

0to+1

0 kepada

+l

B

0to+2

0 kepada +2

C

+lto0

+l

kepada0

D

+lto+2

+l

kepada+2 SPM 2013 Question 2

5

What is the meaning of reduction? Ap

alah

maks u d p murunan?

A

Gainofelecton

Terima

elekton

B

Gain of oxygen Terima oksigen

C

Lossofhydrogen Hilang hidrogen

D

Increase in oxidation number P enamb ahan nom b or p engols idaan

SPM 2013

Questlon

19

6

Which

substance is an

oxidizing

agent? Bahan manakah adqlah agen pengol<sidaan?

A

Bromine water

Air

bromin

B

Magnesium powder Serbuk magnesium

C

Iron(II)

chloride solution

L aru t an _fe

rum(Il)

kl o r i da

D

Potassium iodide solution

Larutan

kalium

iodida

SPM 2013

Question

27

7

Diagram

9

shows

the

apparatus set-up

to

study the transfer

ofelectron

at a distance.

Rajah

9

menunjukkan

susunan

radqs

untuk

mengkaji pemindahan elektrcn pada suatu

jarak.

Iron(tr) sulphate solution

Itrunnferwt(Il)

sulfat Sulphuric acid Asid sulfurik Diagram 9 Rajah9

Which of the following occurs in Diagram 9?

Antara

yang

berikut,

yang

manakah

berlaku dalam Rajah 9?

A

Iron deposited at electrode Q Ferum terenap di _{elektrcd Q}

B

Electrons flow through sulphuric acid Elektron mengalir melalui asid sulfurik

C

Hydrogen gas released at electrode P

Gas hidrogen terbebas di elektrodP

D

Brown colour of bromine tums to colourless

Warna

perang

bromin

menjadi

tidak

berwarna SPM 2013 Question 44

8

The

following

ionic

equation

represents the reaction between acidifi ed potassium dichromate(Vl) solution and

iron(Il)

sulphate solution.

Persamaan

ion

berikut mewakili

tindak

balas

antara larutan kalium

dikromat(Yl)

berasid dengan larut an

_ferum(ll)

s u lfat.

CrrOr2

+

14H* + 6Fe2*

_-

6Fe3*+

2Cf* +7H2O

What is the change ofoxidation numberofchromium in the reaction?

Apakah perubahan nombor pengoksidaan loomium dalam tindak balas im?

A +6to+2

C

+7to+2

+6 kepada

+2

+7 kepada +2

B +6to+3

D

+7to+3

+6 kepada

+3

+7 kepada +3 SPM 2014 Question 29

9

Diagram 5 shows the apparatus set-up

to

study the transfer reaction ofelectron at a distance.

Rajah

5

menunjukkan

susunan

radas

untuk

mengkaji

tindak

balas pemindahan elelaron pada suatujarak. Potassium iodide solution Larutan kalium iodida

Y

Bromine water Airbrcmin Sulphuric acid Asid sulfurik Diagram 5 Rajah 5

a-ral}:

-'\-

---Which of the following occur at

X

andY?

Antara

yang berihtt, yang

manakah berlqku

di X

dan Y?

c

X

Y

Oxidation number of iodine changes from 0 to +2

Noubor

pengoksidaan iodin berubah

dari

0ke+2

Oxidation number of bromine changes

from

I

to0

Nombor pengoksidaan brcmin bentbah dari

_-l

ke 0 Brown solution hrms colourless

Isrulan

perang menjadi tidak berwqrna No change in colour T'rada perubahan wqmcl Iodide ion is oxidised Ion iodida dioksidakan Bromine is reduced Bromin

ditutnkan

Mass

ofX

increases Jisim

X

bertambah

Mass

ofY

decreases Jisim

Y

berkurang

SPM 2011 Question 19

l0

The following

equation rcpresents

the

oxidation reaction between ethanol and acidified potassium dicbromate(Vl).

Penamqtn

berilut

newakili tindqk

balas pengol{s idaan antqra etano I dqn kal ium

dilcromat(yl)

berunid.

3CrItOH

+

ZIlCrrO?

+

8HrSq

---,

3CH3COOH + 2Cr,(SOJr +

2IlSq

+

llItO

B D

A

+2 to +6 +2 kepada +6

B

+3to+6

+3 kepada +6

C

+6to

+2 +6 kepadq +2

D

+6 to +3 +6 kepada +3 SPM 2015

Question

16

11

Which substance is us€d to change

iron(III)

ion to

iron(Il)

ion?

Bahan manakoh yang digunakan

unnk

menukarkan

ionferum

(lll)

kepada ion

_ferun(ll)1

A

Bromine water

Air

bromin

B

Potassium iodide solution Larutan kalium

iodida

Potassium

dichromate(Vl)

solution

Larutan

kalium

diltomqt(Yl)

Acidifi ed potassium manganate(Vll) solution

Larutan

kalium

manganat(Yll)

beras

id

SPlt

2015 Quesflon 23

12

Diagram

6

shows

the

chemical

formula

of

a compound.

Rajah

6

menunjukkan

_{formula kimia bagi}

sdtu sebatiqn.

curo

Diagram 6 Rajah 6

What is the IUPAC name and oxidation number

of

copper element in the compound?

Apakah nama

IUPAC

dan nombor pengoksidaan bagi unsur kupntm dalam sebatian

itu?

N!me ofcompound Nama sebatiah Oxidation number

of

copper element Nombor pengoksidaan unsxr kupram Coppe(l) oxide Kuprun(l) oksida

+l

Copper(I) oxide Kupran(l) oksida Coppe(ll) oxide Kuprum(Il) ol<sida

+l

Coppe(ll) oxide Kryrutu(ll) oksida +2 SPM 2016 Quesflon

2

13

Which

of

the

following occurs

in

oxidation

reaction?

Antara yang

beikut,

yang manakah berlaku dalam tindak balas pengoks idaan?

A

Loss

ofoxygen

Kehilangan oksigen

B

Gain

ofhydrogen

Penerimaan hidrogen

C

Gain

ofelectrons

Penerimaan elekhpn

D

Increase in oxidation numbcr P enamb a han no m b o r p e n go la

id

a an C

D

c

SPM 2016 Question 25

14

Which equation represents a redox reaction? Persamaan manakah

yang mewakili

suqtu tindak balas redoks?

A

NaOH +

HNO,

_--->

NaNO, + HrO

B

2AgNO,

*

Zn

---+

Zn(NOr), +

2Ag

C

2NaCl +

Pb(NO,), ---+

PbCl, + 2NaNO,

D

CaCO, +

2HCl

-->

CaCl, + H2O + CO2

SPM 2016

Quesfion

38

15

The halfequation represents the reduction reaction of acidified potassium

dichromate(Vl)

solution.

Setengah

persamqan

mq,vakili

tindak

balas

penurunan

bagi

larutan

kalium dikromat(Yl)

berasid.

CrrOr2-

*

xH* +

ye-

_--->

zCf'+

THzO

What are the value of x,

y

andz? Apakah

nilai

bagi

x,y

dan z?

SPM 2017

Question

5

16

Which

of the

following

is a reduction reaction?

Antara

yang

berihtt,

yang

manakah

tindak

balas penurunan?

A

Carbon gains oxygen Karbon menerima oksigen

B

Zinc

atom loses electrons Atom zink kehilangan elektron

C

Hydrogen sulfide loses hydrogen

H idrogen suffida kehilangan hidrogen

D

Bromine molecule gains electron Molekul bromin menerima elektron

SPM 2017 Question 45

17

What is the oxidation number of

X

in

XO;?

Apakah nombor

pengoksidaqnX

dalam

XO;?

C

A+4

B+5

c+7

D+8

SPM 2017 Question 49

18

Which half

equations show that reactant acts as a

reducing agent?

Persamaan setengah manakah yang menuniukkan

bqhan

tindak balas

bertindak sebagai

agen penurunan?

x

_v

z

l4

6 2

t4

5 I 7 2 I 7 I 2

I

Mg ---> Mg"

+

2e-ll

Cu2n + 2e- ---+ Cu

III

2Cl

---+

Clr+2s

IV

2H'+

2e

---+

H"

A

IandII

I dan

ll

B

I

and

lll

I dan

lll

C

II

and

IV

ll

dan IY

D

III

and

IV

lIl

dan

lY

ffJ

Rusting

as a

Redox

Reaction

SPM 2011 Question 50

19

Iron rusts in the presence of oxygen and water. Which method causes iron to rust faster? Besi berkarat dengan kehadiran ol<sigen dan air. Kaedah manakah menvebabkan besi berkarat lebih cepat?

A

Coating iron with

tin

Penyaduran besi dengan stanum

B

Touching iron

with

lead

Penyentuhan besi dengan Plumbum

C

Galvanizing iron

with

zinc Penggalvanian besi dengan zink

D

Connecting iron to magnesium

Penyambungan besi kepada magnes ium

SPM 2013 Question S0

20

Diagram

l4

shows a water droplet on a piece of iron.

Rajah

l4

menunjukkan setitis

air

di atas sebatang besi.

Water droplet

Titisun air

Diagram 14

Raiah 14

Which equation occurs at the cathode? Persamaan manakah yang berlaku di

katod|

A

Fe

t

Fe2*+2e-B

Fe2* + 2e- --+ _Fe

C

o2+

2H2O +

4e-

-)

4OH-D

4OH- --+ ₀₂ + 2H2O + 02 SPM 2014 Question 37

2l

A

student

found that

an

iron

spoon rusts easily. What is the suitable method to solve the problem? Seorang

pelajar

mendapati

sudu

besi

mudah

berlrarat. Apakah

kaedah

yang

sesuai

untuk menyeles aikan masalah itu?

A

Dip

into

oil

Celup ke dalam minyak

B

Scrub

with

sand paper

Gosok dengan kertas

pasir

C

Electroplate

with silver

Sadur dengan atgentum

D

Contact

with

copper metal

Sentuh dengan logam kuprum

SPM 2015 Question 18

22

A

method

to conhol

the rusting

of

underground iron pipelines is through sacrificial protection.

Which

of the

following

is the sacrificial metal?

Cara

mengawal

pengaratan saluran

paip

besi bowah tanah adalah melalui perlindungan korban.

Antarayang

berikut, yang manakah adalah logam korban?

A

Copper Kuprum

B

Lead Plumbum

C

Tin

Stanum

D

Zinc

Zink

SPM 2017

Question

7

23

Which

substance is suitable to change Fe2'ions to

Fe3* ions?

Bahan manakah

yang

sesuai

untuk

menukorkan ion F e2* kepada ion F e3' ?

A

Zinc

powder Serbuk

zink

B

Bromine water

Air

bromin

C

Sulphur dioxide gas Gas

sulfur

dioksida

D

Potassium chloride solution

Larutan kalium

klorida

@

The Reactivity

Series

of

Metals

and

Its

Application

SPM 2012 Question 26

24

Diagram 2 shows the apparatus set-up to study the

reactivity

of

a metal

with

oxygen. The

colour

of

the product formed is

yellow

when hot and white when cold.

Rajah

2

menunjukkan.

susunan

radas

untuk

mengkaji kereahifan suatu logam dengan oksigen. Warna hasil yang terbentuk adalah kuning apabila panas dan

putih

apabila sejuk.

Metal powder Serbuk logam Glass wool

Wul kaca _Asbestos

paper Solid potassium manganate(VII), KMnO. Pepejal kalium manganat (Yll), KMnO,

A

Iron Ferum

B

Lead Plumbum

---'

_usbestosKertas Heat Panaskan Heat Panaskan Diagram 2 Rajah 2

What is the metal? Apakah logam itu?

C

Zinc

Zink

D

Copper Kuprum SPM 2012 Question 30

25

Which metals can displace lead from lead(Il) nitrate solution?

Logam manakah

yang

boleh menyesar plumbum daripada larutan

plumbum(ll)

nitrat?

III

Copper Kuprum

IV

Aluminium

Aluminium

C

II

and

III

Il

dan

lll

D

IIIandIV

III danlY

SPM 2013 Question 5

26

Metals are extracted from their ores.

What is the name of the ores that contain Fe,O. as the main mineral?

Logam diekstrakkan daripada bij ih.

Apakah nama

bijih

yang

mengandungi

Fe.O, sebagai mineral utama?

A Cassiterite

C

Kasiterit

B Hematite

D

Hematit

I

Zinc

Zink

II

Silver

Argentum

A

IandII

I

dan

ll

B

IandIV

I

danlY

Magnetite Magnetit Malachite

Malakit

SPM 2013 Question 28

27

Table 3 shows information about thrce chemical cells. Jadual 3 menunjukkan maklumal tentang

tigq

sel kimia. Chemical Pair

of

€lectrodes Pasangan elehfiod Voltage

(1)

Yolta.rt

(v)

Positive

terminal

Teminal

positif

cell Sel kimia I Y

ardZ

YdanZ

0.'7

z

II

Z andE

ZdanE 1.2 E

III

EandX

E danX 1.4 E Table 3 Jadual3

Which

is

the

conect

arrangement

in

ascending order

ofthe

metals in tendency to donate electrons? Susunan logam secara menaikyang manqkah betul bagi kecenderangan

unnk

menderma elelarcn2

A

v,x,z,E

B

X,Y,Z,E

c

E,z,Y,x

D

E,Z,X,Y

SPM 2014 Question 4

2E

The

iollowing

information shows the arrangement ofsome metals in the reactivity senes.

potassium, sodium, R, magnesium, L,

tin

Reactivity decreases

Maklumqt

berik

t menunjukkmt susunan beberapa logam dalam siri kereaktifan.

kelium,

nafium,

R, magnesium, L,

stanum

> Kereahifan menurun

What are R and L?

ApakahR danL?

R

L

Calcium Kalsium Iron Besi Calcium Kalsium Copper Kupram

Aluminium

Aluminium Copper Kuprum

Aluminium

Aluminium Iron Besi D SPM 2016

Question

3

29

What

is

the position

of

hydrogen

ion

in

the electrochemical series?

Apakah

kedudukan

ion

hidrogen

dalam

siri

elektrokimia?

A

Between

lead(Il)

ion and

iron(Il)

ion

Antara

ion

plumbun(ll)

dan

ionferun(ll\

B

Between zinc ion and

iron(Il)

ion

Antara

ion zink dan ion

_ferum(ll)

C

Between

lead(Il)

ion and

coppe(Il)

ion

Antara

ion

plumbum(ll)

dan ion

fuprum(lI)

D

Between zinc ion and

tin(Il)

ion

Antara

ion zink dan ion

stanum(li\

SPM 2016 Quesdon 23

30

Diagram 5 shows an observation when lead strip reacts

with

hydrochloric

acid, bubbles

of

gas are produced.

Rajah

5

menunjukkan satu pemerhatian

apubila

kepingan

plumbum bertindak

balas dengan

asid

hidroklorik,

gelembung gas dihasilkan.

Hydrochloric acid Asid hidroklorik Lead strip Kepingan plumbum Diagram 5 Rajah 5

Which

metal is suitable to replace lead to produce the least gas bubbles?

Logam manakah

yang

sesuai

bagi

menggantik.tn

plumbum untuk

menghqsilkqn gelembung

_Ets

yang

paling

sedikit?

A

Zrnc

Zink

B

Copper Kupram

C

lron

Ferum

D

Aluminium

Aluminium

SPM 2017

Question

50

31 In

the thermite

reaction,

aluminium

is

heated

with

iron

(II)

oxide to

produce

vigorous

reaction and high heat energy to

melt

the

iron.

The molten

iron

can be

used

to fix

the

damaged

railway

track.

The

following

equation represents the reaction:

2Al

+

Fe2O3

+

2Fe

+

AlrO,

IFI

= -3.98 kJ g-' Dalam tindak bqlas termit, aluminium dipanaskan dengan

_ferum

(lI)

oksida untuk

menghasilkan tindak balas yang sangat cergas dan tenaga haba

yang

tinggi

untuk

meleburkan

_ferum.

Leburan

ferum

boleh

digunokan

untuk

memperbaiki

landasan kereta api yang rosak.

P e rs am aan b er ikut mew akil i t indak b al as t ers e b ut'.

2Al

+

Fe2O3

----+2Fe

+AlrO,

AH:-3.98kJgl

What

should be done

to

obtain a

reaction

which

releases more heat?

Apakah

yang

patut

dilakukan untuk

memperoleh

tindak

balas

yang

membebaskan haba

yang

lebih tinggi?

A

Use aluminium powder

Me nggu nakan s er buk a luminium

B

Replace aluminium

with

zinc

Menggantikan aluminium dengan

zink

C

Use aluminium granules

Menggunakan ketulan aluminium

D

Replace aluminium

with

magnesium

Menggant ikan aluminium dengan magnes ium

@

Electrolytic

and Chemical Cells

SPM 2012 Question 27

32

Diagram

3

shows

the

apparatus

set-up

for

an electrolysis cell.

Rajah3

menunjukkan susunan radas bagi satu sel

elektolisis.

Copper Kuprum Copper Kuprum 0.5 mol dmr copper(Il) sulphate solution Inrutan kuprum(ll) sulfat 0.5 mol dmr Diagram 3 Rajah 3

Which

of the

following

happens

if

the experiment

left

for

I

hour?

Antara yang

berikut,

yang

manakah berlaku

jika

el<sperimen itu dibiarkan selama I

jam?

A

Electrode P gets thicker

ElehrodP

semakin tebal

B

Ammeter reading becomes zero

Bacaan ammeter menjadi

sifar

C

Bubbles

ofgas

are produced at electrode Q Gelembung gas dihasilknn di elektrod Q

D

Intensity

of

the blue colour

of

the

solution does not change

Keamatan warna

biru

larutan tidak berubah

SPM 2012 Question 50

33

Diagram I

I

shows a chemical cell. Rajah

ll

menunjukkan suatu sel kimia. Zinc plate Kepingan zink Copper plate Kepingan kuprum Sodium chloride solution Larutan natrium klorida Diagram

ll

Raiah

ll

Which

substances

undergo oxidation

and reduction?

Bahan mqnaleh

yang

mengalami pengoksidaan dan penurunan?

Oxidation

Pengoksidaan

Reduction

Penurunan

Copper Kuprum

Copper(Il)

ion Ion

kuprum(ll)

Copper Kuprum Hydrogen ion

Ion

hidrogen

Zinc

Zink

Copper(Il)

ion Ion

kuprum(ll)

Zinc

Zink

Hydrogen ion

Ion

hidrogen

A

B

C

D

-_-_

_-_-_-_-.v4_-SPM 2013 Question 23

34

Diagram

6

shows a chemical

cell.

The electrons move from electrode L to electrode

M

through the circuit.

Rajah

6

menunjukkan

satu

sel kimia.

Elektron bergerak

dari

elektrod

L

ke

elektrod

M

melalui

litar.

SPM 2015 Question 22

35

The

following ionic

equation represents

a

redox reaction.

Persamaan ion berikut mewakili satu tindak balas redoks.

A1

+3Agr+Alrr+3Ag

Which

statement is correct? Penyataan manakah yang betul?

A

Silver

ion is oxidized

Ion

argentum dioks idakan

B

Silver

ion is a reducing agent

Ion argentum adalah,satu agen penltrunan

C

Aluminium

atom undergoes oxidation

Atom aluminium mengalami pengoks idaan

D

Aluminium

atom receives electrons

Atom aluminium menerimct elektron

Electrode M Elcktrod M Solution Mr. InrLttun M2* Electrode L Elektrod L Porous pot Pasu berliang Solution L2* Iarutan L'* Diagram 6 Rajah 6

Which

statement

is

correct about

the

reaction

in

the chemical cell?

Penyataan manakah

yang betul

tentang

tindak balas dalam sel kimia itu?

A

lon M2* is oxidised

IonM2"

dioksidakan

B

L is more electropositive than

M

L

lebih elektropositif

daripadaM

C

Reduction occurs atelectrode

L

Penurunan berlqku di

elektrodL

D

L is zinc and

M

is magnesium