Cll Relative Atomic Mass and Relative

(1)

SUBTOPIC

NUMBER OF QUESTIONS

2011 2012 2013 2014 2015 2016 2017

3.1 Relative Atomic Mass and Relative

Molecular Mass 1 1 1

3.2 The Mole and the Number of

Particles z 1 1 1

3.3 The Mole and the Mass of

Substances 1 1 1 2

3.4 The Mole and the Volume of Gas 1 1 2 1 1 1

3.5 Chemical Formulae 3 2 z 2 2 1

3.6 Chemical Equations ? 1

PAPER

1

A2

Bt2

c24

D48

Cll

Relative

Atomic

Mass

and

Relative

Molecular

Mass

SPM

20ll

Question

6

I

The average mass of a magnesium atom is 24 times greater than of the mass of a carbon-12 atom. What is the relative atomic mass

of

magnesium? Purata

jisim

satu atom magnesium adalah 24

kali

lebih besar daripada

jisim

satu atom

karbon-\2.

Apakah

jisim

atom

relatif

bagi magnesium?

SPM 2014 Question 44

3

What is the mass of oxygen in 88 g of carbon dioxide? [Relative atomic mass: C

:

12,O:

16]

Berapakah

jisim

oksigen

dalam

88 g

karbon dioksida?

lJisim atom

relatif:

C:

12, O

:

161

A l6e

C

50g

B 32e

D

64e

Gl

The

Mote and

the Number

of

Particles

4

Diagram 4 shows

two

types

of

gases

filled

in two

balloons.

Rajah 4 menunjukkan

duajenis

gas

yang

diisi

ke dalam dua

biii

belon.

SPM 2013

Question

13

2 Why

carbon-I2 was chosen as a reference standard for relative atomic mass and relative molecular mass?

Mengapakah

karbon-|2

telah

dipilih

sebagai

rujukan

piawai

untuk

jisim

atom

relatif

dan

jisin

molekul

relatifl

A

Carbon has three isotopes Karbon mempunyai

tiga

isotop

B

Carbon is non-metal element

Karbon merupakan unsur bukan logam

C

Carbon is a solid and easier to be handle

Karbon adalah pepejal

dan

lebih

senang

dikendalikan

D

Carbon is located

in

Group 14

in

the Periodic Table of Elements

Karbon terletak dalam Kumpulan

14 dalam

Jadual

Berkala

Unsur

32

gof

oxygen gas 32 g gas oksigen 2

gof

hydrogen gas 2ggas hidrogen Diagram 4 Rajah 4 ANALYSIS OF THE 2011_ 2017 SPM PAPERS

(2)

Which

statement

is

correct about

the

number

of

particles in oxygen gas?

[Relative atomic mass:

H:

l,

O:

l6]

Pernyataan manakah yang betul tentang bilangan zarah dalam gas oksigen?

fJisim atom

relatif

H

:

1, O

:

l6]

A

Same as in hydrogen gas

Sama seperti dalant gas hidrogen

B

More than in hydrogen gas

Lebih banyak daripada dalam gas hidrogen

C

Two times more than in hydrogen gas

Dua

kali

lebih

banyak

daripada

dalam gas

hidrogen

D

l6

times more than

in

hydrogen gas

16 kali

lebih

banyak daripada dalam

gas hidrogen

SPM 2011

Question

35

5 What

is

the

number

of

atoms

in

0.5 mol

of

ammonia gas,

NHrt

[Avogadro constant

:

6.02

x

l0:] mol

r]

Berapakah

bilangan etom dalam

0.5 mol

gas

ammonia, NH.?

fPemalar Avogadro

:

6.02

X

1023 mol-r]

A

6.02

x

l0rr

B

0.5

X

6.02

X

l0rl

c

0.5x2x6.02x102r

D

0.5x4x6.02x1023

6

0.58 g

flavouring

substance is used to improve the taste

ofa

pineapple cake.

What is the number of molecules of the

flavourins

substance?

[Relative molecular mass

of

flavouring

substance

:

116 g

mol

r;

Avogadro constant

:6.02

x

1023

mol

r]

0.58 g bahan

perisa

digunakan untuk memperbaik rasa sebiji kek nanas. Berapakah bilangan molekul bahan

perisa

itu?

lJisin

molekul

relatif

bahan

perisa

:

I I 6 g

mol

r;

Pemalar Avogadro

:

6.02 x

l02r

mol

r]

A

8.31

x

10 27

B

3.32 x

l0

22

c

3.01

x

l02r

D

1.20

x

1026

7

Which of the

following

contains the same number of molecules as

in

8.8 g carbon dioxide gas?

fRelative atomic mass

:

H

:

l;

C

:

12;

O

:

16, S

-

32;

l:

l27l

Antara

yang

berikut,

yang

manakah mempunyai

bilangan molekul yang sama seperti yang terdapat dalam 8.8 g gas karbon diol<sida?

lJisim

atomrelatif

:

H: t;C:

12;O:

l6;

S:32;

t:

l27l

A

3.6 g of water 3.6 g

air

B

25.4 g

of

iodine 25.4 g iodin

C

3.2 g

ofoxygen

gas 3.2 g gas oksigen

D

9.6 g of sulphur dioxide 9.6 g

sulfur

dioksida SPM 2013 Question 49

8

What is the number

of

nitrogen atoms in 40.0 g

of

NHINOr?

[Avogadro's constant

:

6.02

X

1023 mol-r;

Molar

mass of NH.,NO.

:

80 g

mol

r]

Berapakah bilangan atom nitrogen dalam 40.0 g NHINO.?

fPemalar

Avogadro

:

6.02 X

1023 mola1, Jisim

rnolarNH.NO,:80

g

mol

r]

A

6.02

X

l0,r

B

3.01

x

l02l

c

2.41x

102r

D

1.51

x

10r' SPM 2015 Question 2

9

What is the meaning

ofAvogadro

constant?

Apakah

yang

dimalcsudkan

dengan

pemalar

Avogadro?

A

Mass of one mole

of

a substance Jisim bagi satu mol bahan

B

Pressure of one mole of a substance Tekanan bagi satu mol bahan

C

Volume occupied by one mole of gas Isi padu yang dipenuhi oleh satu mol gas

D

Numberof

particles in one mole of a substance

Bilangan zarah dalam satu mol bahan

10

What is the number

of

nitrate ions,

NO,- in

2 mol

of

iron(IlI)

nitrate, Fe(NOr)r?

[Avogadro constant

:6.02

x

1023

mol

r]

Berapakah bilangan ion

nitrat,

NOr- dalam

2 mol

.fe ru

m(lll)

n i t r at, F e(N _{O r)} r?

lPemalar Avogadro

:

6.02

X

1023

mol

r]

A

1.204

x

t0r4

B

1.806

x

t0r4

c

3.010

x

1014

(3)

@

The Mole and the Mass of

Substances

SPM 2012

Question

6

11

Which of the

following

particles equal

to

I

mole?

Antara zarah

yang

berikut,

yang

manakah bersamaqn dengan

I

mol?

A

The numberofatom

in I

g ofhydrogen gas Bilangan atom

dalam

I

g gas hidrogen

B

The number of molecule

in

I

g of hydrogen gas Bilangan molekul dalam

I

g gas hidrogen

C

6.02

x

1023 ofhydrogen atoms in hydrogen gas 6.02

x

1023 atom hidrogen dalam gas hidrogen

D

6.02

X

lG3ofhydrogenmoleculeinhydrogengas

6.A

x

lG3 molelail hidrcgen dalam gas hidrogen SPM 2013 Question 45

12

14.9

g of

potassium chloride,

KCl

is

dissolved in

distilled

water to produce 0.4

mol

dm 3 potassium

chloride solution.

What is

the

volume

of

distilled water needed to dissolve potassium chloride?

[Molar

mass:

KCI

= 74.5 g mol-r]

14.9

g kalium

klorida, KCI

dilarutkqn dalam

air

suling

untuk menghasilkan

0.4 mol dm}

larutan

kalium klorida.

Berapakah

isi padu

air

suling

diperlukan untuk melarutkan kalium

klorida?

LJisim

molar: KCI

:

74.5

gmolal

A

50 cm3

B

200 cm3

C

500 cml

D

2 000 cm3

SPM 2014

Quesfion

39

13 Which

substance has a different mass

from

I

mol

of glucose, C6H1206?

H:

l,

C

=

12,O:

16]

Bahan

manakah mempunyai

jisim yang

berbeza

daripada

I

mol glukosa, C6H1206?

LJisim atom

relatif.H =

1, C

:

12, O

:

16)

A

I

mol

of naphthalene, C,oH,

I

mol naftalena,

C,oH,

B

3

mol ofpropanol, C.H,OH

3 mol

propanol, C,H,OH

C

6 mol

of

ethane, CrHu

6 mol of etana, CrHu

D

l0

mol

of water, HrO

l0

mol

air; HrO

SPM 2015

Quesfion

35

14 Eight

atoms

of

element

X

has

the

same mass as

two

atoms of Tellurium, Te.

What is the relative atomic mass of X? [Relative atomic mass:

Te:

128]

Lapan atom unsur

X

mempunyai

jisim

yang sama dengan dua atom

klurium,

Te.

Berapakah

jisim

atom

relatifX?

lJisim

atom

relatif.

Te

= l28l

A8

B16

c32

D64

SPM 2015

Question

36

15 What

is

the

percentage composition

by

mass

of

water

in

hydrated iron

(II)

sulphate, FeSOo.THrO? [Relative atomic mass: H

= l,O =

16, S = 32,Fe =

561

Berapakah peratus komposisijisim bagi

air

dalam

ferum(ll

) su

lfat

terhidrat, FeSOo. TH2O?

LJisim atom

relatif.

H

:

1,O

:

16, S

:32,Fe=

561

A

9.00%

B

14.12'Yo

c

45.32%

D

7t.20%

Gl

The

Mole and

the Volume

of

Gas

SPM 2011

Quesfion

36

16

When

copper(Il)

carbonate, CuCO,

is

heated, the gas released turns the lime water chalky.

What is the volume of gas released when 0.62

gof

copper(ll)

carbonate is heated at room conditions?

[Relative atomic mass: C

:

12,O:

16, Cu = 64; Molarvolume ofgas

:

24 dm3 mol I _at_{room conditions]}

Apabila

kuprum(ll)

karbonat, CuCO, dipanaskon,

gas

yang

terbebas menukarkan

air

kapur menjadi

keruh.

Berapakah isi

padu

gos

yang

terbebas

apabila

0.62 g

kuprum(Il) karbonat

dipanaskan pada

keadaan

bilik?

lJisim atom

relatif:

C:

12, O

:

16,

Cu:

64;

Isi

padu

molar

gas

=

24

dm3 mol-t

pada

keadaan

bilikl

A

5cm3

B

120 cm3

C

240 cm3

D

360 cm3 SPM 2012 Question 44

l7

The

following

equation represents the combustion

ofpropane

in excess oxygen.

Persamaan berikut mewakil i pembakaran propana

dalam ol<sigen berleb ihan.

CrHr+50,

t

3CO2+4H2O

What is the volume of carbon dioxide gas produced when 48 cm3 of propane is completely bumt?

[Molar

volume

of

gas

:

24

dm3

mol-r at

room

temperature]

Apakah isi padu gas karbon dioksida yang

terhasil

apabila 48 cm3 propana terbakar dengan lengkap?

llsi padu

molar

gas

:

24

dm3 mol-t

pada

suhu

bitikl

A

28 cml

B

48 cm3

C

96 cm3

(4)

18 A

compound

of

magnesium

nitrite

contains 72o/o

of magnesium and 28o/o of nitrogen.

What

is

the

empirical formula

of

magnesium

nitrite?

[Relative atomic mass:N

:

l4;Mg:241

Suatu sebatian

magnesium

nitrit

mengandungi

72o/o magnesium dan 28Yo nitrogen.

Apakahformula

empirik bagi magnesium

nitrit?

fJisim atom

relatif

:

N

:

14;

Mg--

2al

A

MgN,

B

MgrN

19

3.2 g of

gas

X

occupies

ll20

cm3

at

standard temperature and pressure (STP).

What is the relative molecular mass of X?

fMolar

volume of gas at STP

:

22.4 dm3

mol-I]

3.2 g gas

X

menempatl

ll20

cm3

pada

suhu dan tekanan pia,uat (STP).

Berapakah

jisim

molekul

relatif

bagiX?

llsi

padu molar gos pada STP

:22.4

dm3

mofr]

C

MgrN,

D

MgrN,

c64

D70

A16

832

20

Diagram

9

shows

a

graph

of

the volume

of

gas released against time for a reaction between calcium carbonate, CaCO, and hydrochloric acid,

HCl.

Rajah

9

menunjukknn

graf

isi padu gas

yang

terbebas melawan masa

bagi tindak

balqs qntara

kalsium karbonat, CaCO,

dan asid

hidroklorik,

HCI..

Volume of gas released (cm3)

Isi padu gas yang terbebas (cm3)

Time (s) Masa (s) Diagram 9

Raiah 9

What is the mass of calcium carbonate used in the reaction?

[Molar

volume

of

gas

:

24

dm3

mofr at

room

conditions;

Relative atomic mass: C

:

12,O:16,Ca--401

Berapakahj isim kalsium karbonat yang digunakan dalam tindak bolas

in?

llsi

padu molar

gas:24

dm3 mol't pada keadaan

bilik;

Jisim atom

relatif:

C

--

12, O

:

16, Ca

:

401

A

0.14

g

C

0.40 g

B

0.20

g

D

2.00 g

SPM 2016

Question

50

2l

Diagram

16 shows volcanic eruptions

which

release gases such as

CO,,

SO2,

H,,

steam, H"S, CO and

HCl.

Rajah 16

menunjukkan

letusan

gunung

berapi

yang membebaskan gas seperti CO,, SO",

H,,

waP

air,HrS,CO

dan

HCl.

Diagram 16

Rajah 16

To simulate the eruptiori

in

the

laboratory

a

pupil

added 12.6

g of

ammonium

dichromate(Vl),

(NH)rCrrO,

in a mortar and immediately ignited.

The

decomposition

reaction

of

ammonium

dichromate(Vl)

produces

three

substances,

chromium(lll)

oxide, nitrogen gas and steam.

What

is

the volume

of

steam produced

at

room

condition?

[Relative atomic

mass:

H: l;N:

14;

O:

16;

Cr

:

52;

Molar

volume

of

gas at

room

condition

:24

dm3

mol-']

(Jntuk mensimulasikan letusan

di

dalam makmal,

seorang

murid

memasukkan

12.6 g

ammonium

dikromat(Yl),

(NHo)rCrrO,

dalam mortar

dan

diny alakan dengan s erta-mer ta.

Tindak balas penguraian ammonium

dikromat(YI)

menghasilkan

tiga

bahan

iaitu

kromium(llI)

oksida, gas nitrogen dan wap air.

Berapakah

isi

padu

wap

air yang

terhasil pada

keadaan

bilik?

lJisim atom

relatif:

H

:

I ; N

:

14; O

:

16: Cr

:

52:'

Isi padu gas pada keadaan

bilik:24

dm3

_{mol ']}

A

4.80 dm3

B

1.20 dm3

C

Q.30 dml

(5)

22

Diagram 4 shows a cooking gas cylinder. Rajah 4 menunjukkan sebuah silinder gas memasak.

I

mol of butane gas

I mol gos butana

Diagram 4 Rajah 4

How many hydrogen atoms are there in the cylinder? [Avogadro constant: 6.02

x

1023)

Berapakah bilangan

atom

hidrogen

yang

terdapat di dalam silinder itu?

fPemalar Avogadro:6.02

X

l0r3]

A tx6.02x1023 c

9x6.02x1023

B 2x6.02x1023 D

10x6.02x1023

@!

Chemical Formulae

SPM 2011

Question

7

23

Diagram

I

_{shows the apparatus set-up to determine}

the empirical formula of

copper(Il)

oxide. Raj ah I menunjukkan susunan radas bagi menentukan formula empirik bagi kuprum(ll) ol<sida

Copper(Il)

_oxide

Combustion tube Kuprum(Il)

oksida

Tiub pembakaran Dry hydrogen

gas

Gas hidrogen kering

./

Porcelain

dish

lHeat Piring

porselin

Panaskan

Diagram I

Rajah I

The dry hydrogen gas must be flowed through the apparatus

for

several minutes before heating the

copper(Il)

oxide.

What is the reason for this action to be taken?

Gas hidrogen kering mesti dialirkan

melalui

radas untuk

beberapa

minit

sebelum pemanasan

kuprum(ll)

oksida.

Apakah sebab tindakqn

ini

diambil?

A

To ensure all the copper(Il) oxide has changed into copper

Untuk memastikan semua

kuprum(Il)

oksida telah bertukar kepada kuprum

B

To

ensure

all

air

has been removed

so

that explosion can be prevented

Untuk memastikan semua

udarq

dikeluarkan supqya letupan dapat dielakkan

C

To

prevent copper

from

reacting

with air

to form

copper(Il)

oxide

Untuk

mengelakkan

kuprum

daripada

bertindak

balas

dengan

udqra

bagi mem b e nt uk

kuprum(ll)

o l<s i d a

D

To prevent the water from

flowing

towards the hot porcelain dish and cracks the combustion tube

Untuk

mengelakkan

air

daripada

mengalir

ke

arah

piring

porselin yang panas

dan

meretakkan tiub pembakaran SPM 2011 Question 30

24

Table 2 shows the proton number and the nucleon number

of

atoms of elements

X

and Y.

X

and Y are not the actual symbols of the elements. Jadual 2 menunjukkan nombor proton dan nombor nukleon bagi atom-atom unstrr

X

dan unsur y .

X

danY

bukan simbol sebenar unsur-unsur ilu.

Element Unsur Proton

number

Nombor

proton

Nucleon

number

Nombor nukleon

X

IJ ₂₇

Y

8 16

Table2

Jadual2

Element

X

reacts

with

element

y

to

form

a

compound.

What is the molar mass of the compound?

Unsur

X

bertindak

_{balas dengan unsur}

y

_untuk

memb entu k s uatu s ebatian.

Berapakah

jisim

molar bagi sebatian itu?

A

43gmol'

B

50 g

mol-'

25

Element

_M

is

in

the same group as magnesium in the Periodic Table. It reacts with oxygen gas to form a compound

with

the formula MO.

What is the formula of the fluoride of element

M?

[Proton number:

F:9, Mg:

12]

Unsur M _{berada dalam lotmpulan yang sama dengan} magnesium dalam Jadual Berkala. Ia boteh bertindak balas dengan

gas

ol<sigen untuk membentuk satu sebatian yang mempunyai

_{formula MO.}

Apakah

_formula

bagi

_fluorida

bagi unsur M2 lNombor

proton:

F =

9,Mg

:

12]

AMF

B

MF,

C

l02gmol'

D

113 g

mol-'

C

M,F

D

M,F,

ffi

f

\---l

)

(6)

SPM 2012

Question

18

26 Which

chemical

formula

is

correctly

named according to the IUPAC nomenclature system?

Formula kimia

manakah yang dinamakan dengan

betul berdasarkan sistem penamaan IUPAC? Chemical

formula

Formala

kimis

Name Nqma

Mgo

magnesium oxide magnesium oksida SO, sulphur oxide

sulfur oksida

CO carbon oxide

karbon oksida FerO, iron oxide

ferum oksida SPM 2012 Question 37

27

The formula

for

potassium hexacyanoferrate(Il) is

given

as K"Fe(CN)u.

Its

relative formula

mass is

368. What i's the value of Y?

C:

12,

N:

14,K:39,

Fe = 561

Formula bagi kalium

heksasianoferat(ll) diberi

sebagai KrFe(CN)u. Jisim

formula relatif

sebotian

ini

ialah368. APakah

nilaiY?

fJisim

atom

relatif'

C:12, N:

14,

K:39,

Fe:

561

A2C4

B 3

D5

SPM 2014

Question

7

28 The

molecular

formula

of

calcium nitrate

and

potassium

phosphate

are Ca(NOr), and

K,PO.

respectively.

What is the molecular formula ofcalcium phosphate?

Formula

molekul

bagi

kalsium

nitrat

dan knlium

fosfat adal ah Ca(NOr), dan K rP O o m as ing- mas i n g'

Apakah

_formula

mo lekul bagi kals ium

_fosfat?

A

CaPOo

B

CarPO,, SPM 2014 Question 48

C

Ca,(POr).,

D

Ca,(PO,,),

29 The following

equation

represents

the

reaction

between sodium and oxYgen.

Persamaan

berikut mewakili tindak

balas antara natrium dan oksigen.

4Na+Oz

_'2NazO

What

is

the

maximum mass

of

sodium

oxide

formed when I I .5 g of sodium is heated completely in oxygen?

Na:

23'

O:

l6]

C

D

Berapakah

jisim

maksimum

natrium

oksida

yang

terbentuk

apabila

I1.5

g

natrium

dipanaskan

dengan lengkap dalam oksigen? lJisim atom

relatif:

Na:23,

O

:

l6]

A

15.5 g

B

19.5 g SPM 2015

Question

7

30

Diagram

I

shows the apparatus set-up to determine the empirical formula of magnesium oxide.

Rajah

I

menunjukkan

susunan

radas

untuk menentukan

_formula

empirik magnesium oksida.

Lid Penutup

C

31.0 g

D

62.0 g Crucible Mangkuk

pijar

Magnesium ribbon Pito magnesium

"l*

Panaskan

"';:::[,'

Which

step

is

correct

to

ensure

the

magnesium

ribbon burnt comPletelY?

Langkah

manakah

yang

betul untuk

memastikan

pita

magnesium

itu

terbqkar dengan lengkap?

A

Raisethecruciblelidonceinawhileduringheating

Buka penutup

mangkuk

pijar

sekali-sekala

semasa pemanasan

B

Heat the

magnesium

ribbon strongly

in

the

crucible

without

its

lid

Panaskan

pita

magnesium

itu

dengan kuat dalam mangkuk

ptjar

tanpa penutupnya

C

Cover the crucible

with

its

lid

as soon as the magnesium ribbon starts burning

Tutup mangkuk pij ar dengan penutupnya sebaik sahaja

pita

magnesium itu mula terbakar

D

Repeat

the

process

of

heating,

cooling

and weighing

until

a constant mass is obtained

(Jlang proses

pemanasan,

penyeiukan

dan

penimbangan sehingga

jisim

tetap diperoleh SPM 2015 Question 37

3l

The

decomposition

of

lead(Il) nitrate

produces

lead(Il)

oxide, nitrogen dioxide and oxygen.

Which

of

the

following

is

the balanced chemical

equation for the reaction?

Penguraian plumbum(Il)

nitrat

menghasilkan

plumbum(ll)

oksida, nitrogen dioksida dan oksigen'

Antara

yang

berikut,

yang

manakah persamaan

kimia seimbang bagi tindak balas tersebut?

A

Pb(NO3),

_-

PbO2 + 2NO + Oz

B

Pb(NO3),

*

PbO + 2NO + Or

C

2Pb(NO3),

+

2PbO + 4NO2 + 02

(7)

32

Diagram 9 shows the apparatus set-up to determine the empirical formula

of lead(Il)

oxide.

Rajah

9 menunjukkan

susunan

radas

untuk menentukan

_formula

empirik

plumbum(ll)

oks ida.

Lead(II) oxide Plumbum(ll\ oksida

Dry hydrogen gas

+

Gas hidrogen kering

Diaprram 9

niion

s

Which

statement explains

why

the method is

not

suitable

to

determine

the empirical formula

of

magnesium oxide?

P ernyataan manakah yang menerangkan mengapa kaedah

ini tidak

sesuqi untuk menentukan

_formula

empir ik magnes ium o ks i da?

A

Magnesium burns

vigorously

in oxygen Magnesium

terbakar

dengan

sqngat

cergas dalam oksigen

B

Magnesium explodes when

it

is heated Magnesium meletup apabila dipanaskan

C

Magnesium is more electropositive than lead

Magnesium

lebih

elektropositif

daripada

plumbum

D

Magnesium is more reactive than hydrogen Magnesium lebih reaktif daripada hidrogen SPM 2016

Quesfion

39

33

0.40 g

X

metal reacts

with

fluorine to produce 0.78 g

ofX

fluoride.

What is the empirical formula of the

X

fluoride? [Relative atomic mass: F

=

19;

X:40]

0.40 g

logam

X

bertindak balas

dengan

_fiuorin

untuk menghasilkan 0.7 8 g X

_fiuorida.

Apakah

_formula

empirik bagi X

_fluorida

itu?

fJisim atom

relatif:

F:

19;

X:401

AXF

B

XF,

C

X,F

D

XFo

SPM 2017

Quesfion

36

34 The following

chemical equation

represents the

photosynthesis process.

Persamaan kimia berikut mewakili proses _{folosintesi.s.}

6Co,

+

r2H2o

#ffic6H,2o6

+ 602 +

6H,o

What is the mass of glucose produced

if

1.2 dmr

of

carbon dioxide gas is used? +

I I

Heat

Panaskan

[Relative atomic mass: H

:

l;

C:

12;Q:

16;

Molar

volume of gas at room

conditions:24

dm3 mol-r] Apakah

jisim

glukosa yang terhasil

jika

1.2 dm3 ga.s

kar bon d io ks ida digunakan?

fJisim atom relatif.

H:

I ; C

:

12; O

:

161' Isi padu molar

gas pada keadaan

bilik:24

dm3 mol-r]

A

0.81 g

B

1.50 g

c

4.e!

_e

D

9.00 g

f[!

Chemical Equations

SPM

2011Question

3

35 The following

equation

represents

a

chemical

reaction.

NqCO,(aq) +

Cacl(aQ

*

CaCO:(s) + 2NaC(aq)

Persamaan

berikut mewakili satu tindak

balas

kimia.

NqCQ(ak)

+

Cacl(ak)

---+

_CaCQ(d

_{+ 2NaC(ak)}

Which statement is correct? Pernyataan manakah yang betul?

A

Two

moles

of

sodium

carbonate react

with

one mole of calcium chloride

Dua mol natrium

karbonat bertindok

balas

dengan satu mol kalsium

klorida

B

The products are calcium carbonate precipitate and sodium chloride solution

Hasil

tindak balas

ialah

mendakan kalsium

karbonat dan larutan natrium

klorida

C

The reactants are

solid

sodium carbonate and

calcium chloride solution

Bahan tindak balas ialah pepejal

natrium

karbonat dan larutan kalsium

klorida

D

Two

moles

of

calcium

carbonate

and

one

mole

of

sodium chloride are formed

Dua mol

kalsium karbonat dan satu

mol natrium

klorida

terbentuk

36 What

is

the

mass

of

sodium chloride

obtained

when 50.0 cm3

of

1.0

mol

dm-3 sodium hydroxide reacts

with

50.0 cm3

of

1.0 mol dm-3 hydrochloric acid?

[Relative atomic mass: Na

:

23,

Cl:

35.5

_]

Berapakah

jisim

natrium klorida yang

diperoleh apabila 50.0 cm3 natrium hidrol<sida 1.0 mol dm 3 bertindak balas dengan 50.0 cm3 asid

hidroklorik

1.0

mol

dmr?

lJisim atom

relatif:

Na

:

23, Cl

:

35.51

A

0.025 g

B

0.050 g

C

1.463 g

(8)

37

The reaction between barium chloride solution and

lead(Il)

nitrate solution produces

lead(Il)

chloride

and barium nitrate.

Which ionic equation represents the reaction?

Tindak

balas

antara larutan

barium

klorida

dan

larutan plumbum(Il)

nitrat

menghasilkon

plumbum(Il)

klorida dan barium nitrat.

Persamaan

ion yang

manakah

mewakili

tindak balas itu?

A

pb2* +

_NO3-

---

pb(NO3),

B

Pb2*

+

2Cl-

---+ PbCl,

C

Ba2*

+

2Cl-

___+

_BaCl,

D

Ba2* +

2NO3-

_-

Ba(NOr)2 SPM 2016 Question 22

38 The

reaction between

aluminium and iron(III)

oxide produce iron and substances

X.

What is the chemical formula of X?

Tindak balas di antara aluminium

denganferum(lll)

olrs ida menghos ilkan

_ferum

dan bahan X. Apakah

_{formula kimia}

b agi X?

A

AIO

B

AlO2

SPM 2017

Question

38

c

Al2o3

D

Al3O2

39

Diagram 16 shows the composition

of

a coral reef. Rajah 16 menunjukkan komposisi suatu terumbu karang.

Diagram 16 Rajah 16

What is the empirical formula

of

the compound in the coral

reefl

Apakah

_formula

empirik bagi

sebatian

dalam

terumbu karang tersebut?

lJisim atom

relatif.

X

:

40;

Y

:

12;

Z:

16)

A

XYZ

B

XYZ3

c

xYZ4

D

X3YZ4

40 The

following

chemical equation shows

the decomposition

of

lead(II) nitrate.

P ers amaan kimi a b eri kut me nu nj ukkan p e ngu ra i a n

b agi p lum

bum(ll)

n it rat.

2Pb(NO3), ----+ 2PbO + 4NO2

+

02

What

is

the

mass

of

lead

(II)

nitrate

needed

to

produce

3.6 dmr

of

oxygen gas

at

room

condition?

[Relative atomic

mass:

Pb

-

207:

N

:

14;

O

:

16;

Molar

volume

of

gas: 24

dm3

mol-r

at room

conditionsl

Apakah

jisim

plumbum

(ll)

nitrat

yang diperlukan

untuk

menghasilkan

3.6

dm-3

gas

oksigen pada

keadaan

bilik?

fJisim atom

relatif:

Pb

:207:

N

:

14;

O:

16;'

Isi

padu molar bagi

gas:24

dm3

mol

I _pada_keadaan

bitikl

A

74.48 g

B

99.30

_s

C

148.95 g