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Trial spm chem paper 2 set 2

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Section A
Bahagian A
[60 marks]
[60 markah]
Answer all questions in this section.
Jawab semua soalan dalam bahagian ini
1
Diagram 1 shows the position of several elements A, B, C, D, E, F, G and H.
Rajah 1 menunjukkan kedudukan beberapa unsur-unsur A, B, C, D, E, F, G dan H.
A
B
C
G
D
E
F
H
Diagram 1
Rajah 1
By using the symbols A, B, C, D, E, F, G and H, answer the following questions.
Dengan menggunakan simbol A, B, C, D, E, F, G dan H, jawab soalan-soalan berikut.
(a) State one element which you would classify under Group 1.
Nyatakan satu unsur yang boleh dikelaskan di bawah Kumpulan 1.
……………………………………………………………………………………...........
[1 mark]
[1 markah]
(b) State the element that exists as diatomic molecule.
Nyatakan unsur yang wujud sebagai molekul dwiatom.
…………………………………………………………………………………………….
[1 mark]
[1 markah]
2
(c)
Why is element B chemically unreactive.
Mengapa unsur B tidak reaktif secara kimia.
…………………………………………………………………………………………….
[1 mark]
[1 markah]
(d) (i)
The information below shows the special characteristics of an element in Diagram 1.
Maklumat di bawah menunjukkan ciri istimewa bagi suatu unsur dalam Rajah 1.
•
•
Form coloured compounds
Membentuk sebatian berwarna
Acts as catalyst
Bertindak sebagai mangkin
Which of the element shows the above characteristics?
Unsur yang manakah menunjukkan sifat di atas?
…………………………………………………………………………………………….
[1 mark]
[1 markah]
(ii) Name the group of element in (e)(i).
Namakan kumpulan unsur di (e)(i).
………………………………………………………………………………………………….
[1 mark]
[1 markah]
3
2
Potassium reacts with water to form an alkali and a colourless gas. The chemical equation
of the reaction is as follows :
Kalium bertindakbalas dengan air untuk menghasilkan satu alkali dan sejenis gas tidak
berwarna. Persamaan kimia adalah seperti yang berikut:
xK(s)
+
yH2O (l)
zKOH (aq) + H2(g)
(a) Balanced the chemical equation for the reaction by determine the value of X, Y and Z.
Seimbangkan persamaan kimia untuk tindak balas itu dengan menentukan nilai X, Y dan Z.
x : …………………
y : ………………….
z : …………………….
[3 marks]
[3 markah]
(b) Name the reactants and the product in the chemical equation above.
Namakan bahan tindak balas dan hasil tindak balas dalam persamaan kimia di atas.
Reactants
: …………………………………………………………………..
Bahan tindak balas
Products
: …………………………………………………………………..
Hasil tindak balas
[2 marks]
[2 markah]
(c)
Interpret the above chemical equation quantitatively.
Tafsirkan persamaan kimia di atas secara kuantitatif.
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
[1 mark]
[1 markah]
4
3
(a)
Diagram 3.1 shows the set-up of apparatus used by a student to coat an iron spoon with a
layer of copper.
Rajah 3.1 menunjukkan susunan radas yang digunakan oleh pelajar untuk menyadur sudu
besi dengan lapisan kuprum
Diagram 3.1
Rajah 3.1
(i)
(ii)
(iii)
State the name of the process carried out by the student.
Nyatakan nama proses yang dijalankan oleh pelajar tersebut.
........................................................................................................................................
[1 mark]
[1 markah]
State the energy changes for the cell in Diagram 3.1.
Nyatakan perubahan tenaga untuk sel dalam Rajah 3.1.
........................................................................................................................................
[1 mark]
[1 markah]
Write the half-equations for the reactions that take place at the
Tuliskan persamaan setengah untuk tindak balas yang berlaku di
anode:
anod:
..................................................................................................................................
cathode:
katod:
..................................................................................................................................
[2 marks]
[2 markah]
5
(b)
Suggest a suitable substance for solution X.
Cadangkan satu bahan yang sesuai digunakan sebagai larutan X.
...............................................................................................................................................
[1 mark]
[1 markah]
(c)
State the observation for the solution you suggest in (b) after 10 minutes.
Nyatakan pemerhatian bagi larutan yang kamu cadangkan di (b) selepas 10 minit..
...............................................................................................................................................
[1 mark]
[1 markah]
6
4
Two experiments were carried out to investigate factors that affect the rate of reaction.
Table 4 shows the description of each experiment.
Dua eksperimen telah dijalankan untuk mengkaji faktor mempengaruhi kadar suatu tindak
balas.
Jadual 4 menunjukkan perincian setiap eksperimen.
Experiment
Eksperimen
Reactant
Bahan tindak balas
Temperature,°C
Suhu,°C
Time taken for
collecting 30 cm3 of
gas released, (s)
Masa yang diambil
untuk mengumpul 30
cm3 gas yang
terbebas, (s)
30.0
20.0
30.0
12.0
Excess zinc powder +
20 cm3 of 0.1 mol dm-3
sulphuric acid
I
Serbuk zink berlebihan
+ 20 cm3 asid sulfurik
0.1 mol dm-3
II
Excess zinc powder +
20 cm3 of 0.1 mol dm-3
sulphuric acid +
copper(II) sulphate
solution
Serbuk zink berlebihan
+ 20 cm3 of 0.1 mol dm3
asid sulfurik + larutan
kuprum(II) sulfat
Table 4
Jadual 4
7
(a) Complete the diagram 4 with a suitable apparatus.
Lengkapkan rajah 4 dengan radas yang sesuai.
Burette
Buret
Water
Air
20 cm 3 of 0.1 mol dm -3 of sulphuric acid + excess zinc granules
20 cm 3 asid sulfurik 0.1 mol dm -3 + ketulan zink berlebihan
Diagram 4
Rajah 4
[1 mark]
[1 markah]
(b) Write the chemical equation for the reaction between zinc and sulphuric acid.
Tuliskan persamaan kimia bagi tindak balas antara zink dan asid sulfurik
........................................................................................................................................
[2 marks]
[2 markah]
(c)
Calculate the average rate of the reaction for experiment I and experiment II in cm3 s-1.
Kira purata kadar tindakbalas untuk eksperimen I dan eksperimen II dalam unit cm3 s-1
(i)
Experiment I
Eksperimen I
(ii)
Experiment II
Eksperimen II
[2 marks]
[2 markah]
8
9
5
Diagram 5 shows the conversion of lead(II) nitrate.
Rajah 5 menunjukkan pertukaran bagi plumbum(II) nitrat.
Lead(II) nitrate solution
Larutan plumbum(II) nitrat
I
Na2CO3 solution
Larutan Na2CO3
Solid salt R
Pepejal garam R
II
Heated
Dipanaskan
Solid S
Pepejal S
+
Gas T
Gas T
Diagram 5
Rajah 5
(a) (i)
Write the chemical formula of lead(II) nitrate.
Tuliskan formula kimia untuk plumbum(II) nitrat.
……………………………………………………………………………………...........
[1 mark]
[1 markah]
(ii) Name the reaction I.
Namakan tindak balas I.
…………………………………………………………………………………………….
[1 mark]
[1 markah]
(b) Based on Diagram 5, identify salt R, solid S and gas T.
Berdasarkan Rajah 5, kenal pasti garam R, pepejal S dan gas T.
R : ………………………………………………………..
S : ………………………………………………………..
T : ………………………………………………………..
[3 marks]
[3 markah]
10
(c)
State the colour of solid S.
Nyatakan warna pepejal S.
…………………………………………………………………………………………………..
[1 mark]
[1 markah]
(d) (i) Name the reaction Il.
Namakan tindak balas Il.
…………………………………………………………………………………………….
[1 mark]
[1 markah]
(ii) Write a chemical equation for Reaction II.
Tuliskan persamaan kimia bagi tindak balas II
…………………………………………………………………………………………….
[1 mark]
[1 markah]
11
6
Diagram 6 shows an apparatus set-up to determine the end titration through electrical
conductivity method 25 cm3 1.0 moldm-3 of strong alkali YOH is neutralises by acid H2SO4.
Rajah 6 menunjukkan susunan alat radas untuk menetukan takat akhir menggunakan
kaedah kekonduksian elektrik bagi 25 cm3 berkepekatan 1moldm-3 alkali kuat YOH yang
dineutralkan oleh asid H2SO4.
Acid X2SO4
Asid X2SO4
Carbon
karbon
YOH alkali
Alkali YOH
A graph of electrical conductivity, ammeter reading against the volume of acid H2SO4 (cm3) is
then plotted. The end point of titration during neutralisation can be determine when the
electrical conductivity is at the lowest.
Graf kekonduksian elektrik, bacaan ammeter(A) melawan isi padu asid H2SO4 (cm3) kemudian
diplotkan. Takat akhir pentitratan boleh ditentukan apabila kekonduksian elektrik berada pada
takat paling rendah.
12
(a)
H2SO4 is a strong acid. What is meant by a strong acid?
H2SO4 adalah asid kuat. Apakah maksud asid kuat?
………………………………………………………………………………………………………..
(b)
………………………………………………………………………………………………………..
[1 mark / 1 markah]
H2SO4 is also diprotic acid. What is meant by a diprotic acid?
H2SO4adalah asid diprotik. Apakah maksud asid diprotik?
………………………………………………………………………………………………………..
……………………………………………………………………………………………………….
[1 mark/ 1 markah ]
(c)
At the end point of titration, ammeter still gives the reading. Explain why?
Pada takat akhir penitratan, ammeter masih memberikan bacaan. Terangkan mengapa?
………………………………………………………………………………………………………..
(d)
………………………………………………………………………………………………………..
[1 mark / 1 markah ]
(i) Write the chemical equation for the reaction
Tuliskan persamaan kimia bagi tindak balas tersebut
(ii)
(iii)
………………………………………………………………………………………………….
[2 marks/ 2 markah ]
Calculate number of mole YOH alkali.
Kirakan bilangan mol alkali YOH
[1 mark/ 1 markah ]
Molarity of acid H2SO4 used in this titration reaction.
Kemolaran asid H2SO4 yang telah digunakan dalam tindak balas penitratan ini.
[2 marks/ 2 markah ]
13
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SULIT
7
Diagram 7 shows two sets of experiments to investigate the chemical properties of
hydrochloric acid. Zinc powder and copper(II) carbonate powder are added to each test
tube respectively.
Rajah 7 menunjukkan dua set eksperimen untuk menyiasat sifat-sffat kimia
asid hidroklorik. Serbuk zink dan serbuk kuprum(II) karbonat dimasukkan ke dalam
setiap tabung uji masing-masing.
Set 2
Set 1
�
JJ_
_IJ
�
Zinc powder
Serbukzink
Hydrochloric acid
Asid hidroklorik
_IJ
Copper(II)
carbonate powder
Serbuk kuprum(II)
karbonat
Hydrochloric acid
Asid hidroklorik
.J:)_
.J:J_
-o-
Diagram 7
Rajah 7
(a )
State the name of the gas released in:
Nyatakan nama gas yang terbebas di:
I
Set 1 : ........................................................................................................................
Set 2: ...................................................................................................................... ..
[2 marks]
[2 markah]
(b)
Describe briefly a confirmatory test for the gas released in:
Huraikan secara ringka{ujian pengesahan bagi gas terbebas di:
Set 1 : ........................................................................................................................
Set 2: ........................................................................................................................
···············································································································-·······
[4 marks]
. [4 markah]
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SULIT
(c)
State the colour of solution formed in:
Nyatakan warna larutan yang terbentuk di
Set I : ....................................................................................................................... .
Set 2: ...................................................................................................................... ..
[2 marks]
[2 markah]
(d)
Write a balanced chemical equation for reaction in Set 2.
Tulis persamaan kimia yang seimbang bagi tindak balas di Set 2.
[2 marks]
[2 markah]
[Lihat halaman sebelah
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SULIT
8
Diagram 8 shows the structural formula of compound X.
Rajah 8 menunjukkan formula struktur bagi sebatian X.
I
H H H H
I I I I
H-C-C==C-C-H
I
I
H
H
UNLEADED
, J
Q
j_�
Compound X
Sebatian X
Diagram 8
Rajah 8
Compound Xis one of the components in petrol. The oxidation of X produces compound Y.
The following chemical equation shows the oxidation of X to produce compound Y.
Sebatian X merupakan salah satu komponen yang terdapat di dalam petrol. Pengoksidaan
sebatian X menghasilkan sebatian Y.
Persamaan kimia berikut menunjukkan pengoksidaan X untuk menghasilkan sebatian Y.
7 7 7 �
H-C-C=C-C-H + H20 + [O]
I
H
(a)
(i)
--->�
y
H
State the suitable oxidizing agent used in this reaction.
Nyatakan agen pengoksidaan yang sesuai digunakan dalam tindak balas ini .
..
.. ............
(ii)
f
. . . . . . . . . . . . ·�..............................................................
[1 mark]
[l markah]
State the colour change for the reaction in 8(a)(i).
Nyatakan perubahan warna dalam tindak balas di 8(a)(i).
[1 mark]
[1 markah]
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(iii) Draw the structural formula of compound Y.
Lukiskan formula struktur sebatian Y.
(b)
[l mark]
[1 markah]
CompoundX has isomers.
Sebatian X mempunyai isomer.
(i)
Draw the structural formula of one isomer of compoundX.
Lukiskan formula struktur bagi satu isomer sebatian X.
[l mark]
[1 markah]
(ii)
State the name of the isomer in 8(b)(i) according to IUPAC nomenclature .
Nyatakan nama isomer dalam 8(b)(i) mengikut penamaan IUPAC.
··········· ··················· .............................................................
[l mark]
[I markah]
(c)
10 g of compoundX burnt completely in excess oxygen .
10 g sebatian X terbakar lengkap di dalam oksigen berlebihan.
(i)
Write a balanced chemical equation for combustion of compoundX.
Tuliskan persamaan kimia seimbang bagi pembakaran sebatianX.
····················· ··························· ...........................................
[2 marks]·
[2 markah]
(ii) Calculate the volume of oxygen gas used for complete combustion of
compoundX.
[Relative atomic mass: H=l, C=12]
[1 mole of gas occupied 24 dm 3 at room conditions]
Hitungkan isi pad_u gas oksigen yang digunakan untuk pembakaran lengkap
sebatian X.
[Jisim atom relatif: H=l, C=l2)
[ 1 mo! gas menempati 24 dm3 pada keadaan bilik]
[3 marks]
[3 markah]
[Lihat halaman sebelah
SULIT
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SULIT
Section B
Bahagian B
[20 marks]
[20 markah]
Answer one question in this section.
Jawab satu soalan dalam bahagian ini.
9
(a)
(b)
Compound Q consists of 54.54% carbon, 9.09% hydrogen and the rest is oxygen
by mass. The molar mass of the compound Xis 88 g mot- 1•
[Relative atomic mass: H = 1, C = 12 and O = 16]
Sebatian Q terdiri daripada 54.54% karbon, 9.09% hidrogen dan selebihnya
adalah oksigen berdasarkan jisim. Jisim molar bagi sebatian X adalah 88 g moi- 1•
[Jisim atom relatif: H=l, C=l2 dan 0=16]
Determine the empirical formula, molecular formula and name of compound Q.
Tentukanformula empirik, formula mole/cul dan nama bagi sebatian Q.
[8 marks]
[8 markah]
Table 9 shows the characteristics of compound X, Y and Z.
Jadual 9 menunjukkan ciri-ciri sebatian X, Y dan Z.
Compound
Sebatian
Properties
Sifat
•
X
•
•
•
y
•
•
•
z
•
•
Consist of 3 carbon atoms
Terdiri daripada 3 atom karbon
Dissolve in water
Lant! dalam air
Change blue litmus paper to red
Menukarkan kertas litmus biro ke merah
Has same number of carbon atoms as compound X
Mempunyai bilangan atom karbon yang sama dengan
sebatian X
Miscible in water
Terlarut campur dalam air
Burnt in excess oxygen without soot produced
Terb.akar tanpa jelaga di dalam oksigen berlebihan
Formed through the reaction between compounds X and Y
Terbentuk melalui tindak balas antara sebatian X dan
sebatian Y
Insoluble in water
Tidak larut di dalam air
Sweet smell
Berbau harum
Table 9
Jadual 9
SULIT
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SULIT
(i)
(ii)
Based on information in Table 9,
Berdasarkan maklumat dalam Jadual 9,
•
state the homologous series and the functional group for each
compounds.
nyatakan siri homolog dan kumpulan berfungsi bagi setiap sebatian.
[6 marks]
[6 markah]
•
write the chemical equation to shows the production of compound Z.
tulis persamaan kimia untuk menunjukkan penghasilan sebatian Z.
[2 marks]
[2 markah]
If you are supplied with compounds X and Y are not labelled, describe how
you can differentiate both compounds by using suitable reagent.
Sekiranya anda dibekalkan dengan sebatian X dan Y yang tidak berlabel,
huraikan bagaimana anda dapat membezakan kedua-dua sebatian dengan
menggunakan reagen yang sesuai.
[4 marks]
[4 markah]
[Lihat halaman sebelah
SULIT
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10
(a)
Diagram 10.1 shows the apparatus set-up for the electrolysis of 1.0 mol dm-3
copper(TI) chloride solution using carbon electrodes.
Rajah 10.1 menunjukkan susunan radas untuk elektrolisis larutan
kuprum(II) klorida 1.0 mol dm-3 dengan menggunakan elektrod /carbon.
__ Gas
Gas
1.0 mol dm-3 copper(II) chloride
solution
1.0 mol dm-3 larutan kuprum(II)
klorida
Carbon
Karban
Diagram 10.1
Rajah 10.1
Based on Diagram 10.1, explain the reactions at anode and cathode.
Your explanation should include the following:
Berdasarkan Rajah 10.1, terangkan tindak balas di anod dan katod.
Penerangan anda perlulah mengandungi perkara berikut:
•
List of ions attracted to each electrode
Senarai ion-ion yang tertarik ke setiap elektrod
•
Names of the ions are selected to be discharged at each electrode
Nama ion-ion yang dipilih untuk dinyahcaskan di setiap elektrod
•
Reasons for the ions are selected to be discharged
Sebab ion-ion dipilih untuk dinyahcaskan
•
Half equation for each reaction
Setengah persamaan bagi setiap tindak balas
•
Observations at each electrode
Pemerhatian di setiap elektrod
[10 marks]
[10 markah]
SULIT
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SULIT
(b)
Diagram 10.2 shows the apparatus set-up to investigate electron transfer at a
distance in redox reactions.
Rajah 10.2 menunjukkan susunan radas untuk mengkaji pemindahan
elektron pada suatu jarak dalam tindak balas redoks.
Carbon
Karban
y
,c..,:i._---Iron(III) sulphate solution
Larutan ferum(Ill) sulfat
Potassium chloride solution
Larutan kalium klorida
Dilute sulphuric acid
Asid sulfurik cair
U-Tube
Tiub V
Diagram 10.2
Rajah 10.2
(i)
Based on Diagram 10.2, state negative terminal of the U-tube, direction of
electron flow and observation at potassium chloride solution.
Name the oxidizing agent in the reaction.
Berdasarkan Rajah 10.2, nyatakan terminal negatif pada tiub-U,
arah pengaliran elektron dan pemerhatian pada larutan kalium klorida.
Namakan agen pengoksidaan dalam tindak balas tersebut.
[4 marks]
[4 markah]
(ii)
Explain the oxidation and reduction processes in term of the electron
transfer that occurs at the negative and positive terminals in Diagram 10.2.
Terangkan proses pengoksidaan dan penurunan dari segi pemindahan
elektron yang berlaku di terminal negatif dan terminal positif dalam Rajah
10.2.
[4 marks]
[4 markah]
(iii) Draw another a1<paratus set-up to show the oxidation and reduction
processes in electron transfer at a distance by using the same oxidizing
agent and reducing agent in Diagram 10.2.
Lukiskan susunan radas lain untuk menunjukkan proses pengoksidaan dan
penurunan dalam pemindahan elektron pada satu jarak dengan
menggunakan agen pengoksidaan dan agen penurunan yang sama dalam
Rajah 10.2.
[2 marks]
[2 markah]
[Lihat halaman sebelah
SULIT
Section C
Bahagian C
[20 marks]
[20 markah]
Answer all questions from this section.
Jawab semua soalan daripada bahagian ini
11 (a) Table 11.1 shows the properties and the arrangement of atoms in two types of materials,
P and Q. Material Q is an alloy while P is its pure metal.
Jadual 11.1 menunjukkan sifat-sifat dan susunan atom dalam dua jenis bahan, P dan
Q. Bahan Q ialah sejenis aloi manakala P ialah logam tulennya.
Material P
Bahan P
Material Q
Bahan Q
● Soft and less strong
Lembut dan kurang kuat
● Hard and strong
Keras dan kuat
● Easily rust
Mudah berkarat
● Not easily rust
Tidak mudah berkarat
Arrangement of atoms
Susunan atom
Arrangement of atoms
Susunan atom
Fe atom
Atom Fe
C atom
Atom C
Table 11.1
Jadual 11.1
(i)
Material Q is more suitable than material P to make a railway tracks.
Explain in terms of arrangement of atoms, why material Q is more suitable to make a
railway tracks.
[4 marks]
Bahan Q lebih sesuai dijadikan landasan keretapi berbanding bahan P.
Terangkan dari segi susunan atom, mengapa bahan Q lebih sesuai dijadikan
landasan keretapi.
[4 markah]
26
(ii)
By using one example of pure metal and its alloy, describe an experiment to show
that alloy is able to withstand corrosion compare to its pure metal.
Your answer should include procedure, result and conclusion.
[10 marks]
Dengan menggunakan satu contoh logam tulen dan aloinya, hurai satu eksperimen
untuk menunjukkan aloi tahan terhadap kakisan berbanding logam tulennya.
Jawapan anda haruslah mengandungi prosedur, keputusan dan kesimpulan.
[10 markah]
(b) Table 11.2 shows three manufactured substances in industries, X, Y and Z with their uses.
Jadual 11.2 menunjukkan tiga bahan buatan industri X, Y dan Z serta kegunaannya.
Manufactured substances
Bahan buatan
Use
Kegunaan
X
To make glass cookware and boiling tubes.
Untuk membuat alatan memasak berkaca dan
tabung didih.
Y
To make helmets and water storage tanks.
Untuk membuat topi keledar dan tangki
penyimpanan air.
Z
To make internal wall of the furnace.
Untuk membuat lapisan dalam dinding relau.
Table 11.2
Jadual 11.2
Based on Table 11.2, determine the name of substances X, Y and Z.
Give one specific property of each substance according to its use.
[6 marks]
Berdasarkan Jadual 11.2, tentukan nama bagi bahan-bahan X, Y dan Z.
Berikan satu sifat yang khusus bagi setiap bahan bersesuaian dengan kegunaannya.
[6 markah]
END OF QUESTION PAPER
KERTAS PEPERIKSAAN TAMAT
27
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