Download - Kertas Percubaan Kimia Spm 2013 Kertas 1
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1 Diagram 1 shows a graph of temperature against time represents the heating of
naphthalene powder.
Rajah 1 menunjukkan graf suhu melawan masa bagi pemanasan serbuk naftalena.
Diagram 1
Rajah 1
Which of the following statements is true?
Antara yang berikut, pernyataan manakah yang benar?
A
B
C
D
Exist as a liquid at P
Wujud sebagai cecair pada P
Heat is released at QHaba dibebaskan pada Q
The melting point is !o"
Takat lebur ialah !o"
The particles are #er$ closel$ pac%ed at &
Zarah-arah tersusun sangat rapat pada &
2 Diagram ' shows the set(up of the apparatus to determine the empirical formula of a metal
oxide.
Rajah 'menunjukkan susunan radas untuk menentukan f!rmula empirik suatu !ksida l!gam.
Diagram '
Rajah '
Time)t*s+
Temperature)T*o"+
!
P
Q&
H$drogen gas"as hidr!gen
,etal oxide#ksida l!gam
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Which of the following metal oxides is suita-le to -e used in Diagram '?
Antara !ksida l!gam yang berikut, yang manakah sesuai digunakan dalam Rajah '$
A inc oxide
Zink !ksida
B "opper*//+ oxide
%uprum&''( !ksida
C ,agnesium oxide
)agnesium !ksida
D 0luminium oxide
Aluminium !ksida
3 Which of the following elements are in roup 1 in the Periodic Ta-le of Elements?
Antara unsur-unsur berikut yang manakah dalam kumpulan 1dalam *adual +erkala
nsur
A
B
C
D
Helium and neon
Helium dan ne!n
2ithium and magnesium
itium dan magnesium
H$drogen and helium
Hidr!gen dan helium
3odium and potassiumatrium dan kalium
4 Diagram 4 shows the electron arrangement of a compound -etween atom P and atom Q.
Rajah 4menujukkan sususun elektr!n bagi sebatian yang terbentuk antara at!m / dan
at!m 0.
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Diagram 4
Rajah 4
The compound formed
1ebatian yang terbentuk
A
B
C
D
is a co#alent compound
merupakan sebatian k!2alen
has a high melting ponit
mempunyai takat lebur yang tinggi
conducts electricit$
mengalirkan arus elektrik
is solu-le in water
larut dalam air
5 Diagram 5 shows a chemical cell.
Rajah5menunjukkan satu sel kimia.
Diagram 5
Rajah 5
The -ul- in Diagram 5 do not light up. This is -ecause
)ent!l dalam Rajah 5tidak menyala. 'ni disebabkan !leh
A
B
H$drogen chloride exist as molecules
Hidr!gen kl!rida wujud sebagai m!lekul
The electrode used is not a metal
H$drogen chloride in tetrachloromethane
Hidr!gen kl!rida di dalam tetrakl!r!metana
"ar-on rod
R!d karb!n
"ar-on rod
R!d karb!n
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C
D
3lektr!d yang digunakan bukan suatu l!gam
H$drogen ions and chloride ions mo#e freel$
'!n hidr!gen dan i!n kl!rida bergerak bebas
H$drogen
ions and chloride ions are discharged'!n hidr!gen dan i!n kl!rida dinyahcaskan.
6 Which of the following is true a-out an al%ali?
Antara pernyataan berikut yang manakah benar tentang alkali$
A 0n al%ali is not corrosi#e
Alkali tidak mengkakis
B 0 strong al%ali has a low pH #alueAlkali kuat mempunyai nilai pH yang rendah
C 0n al%ali is a -ase that is solu-le in water
Alkali ialah bes yang larut dalam air
D 0 wea% al%ali has a high degree of ioni6ation
Alkali lemah mempunyai kadar pengi!nan yang tinggi
7 "opper*//+ chloride salt can -e prepared -$ mixing h$drochloric acid and
"aram kuprum&''( kl!rida b!leh disediakan dengan mencampurkan asid hidr!kl!rik
dan
A
B
C
D
"opper
%uprum
"opper*//+ nitrate
%uprum&''( nitrat
"opper*//+ car-onate
%uprum&''( karb!nat
"opper*//+ sulphate
%uprum&''( sulfat
8 During the manufacturing of sulphuric acid) sulphur dioxide is oxidised to sulphur
trioxide.
4i dalam pembuatan asid sulfurik, sulfur di!ksidakan kepada sulfur tri!ksida.
2SO2 + O2 2SO3The reaction is catal$sed -$
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Tindak balas ini memerlukan mangkin
A
B
C
D
Platinum
/latinum
7anadium*7+ oxide
5anadium&5( !ksida
,anganese*/7+ oxide
)angan&'5( !ksida
/ron
6erum
9 Diagram 8 shows four sets of apparatus to in#estigate the rate of reaction .
Rajah8di bawah menunjukkan empat set radas untuk mengkaji kadar tindak balas.
8cm of magnesium ri--on
8 cm pita magnesium
Set I Set II Set III Set IV
Diagram 8
Rajah 8
Which of the following set of apparatus shows the magnesium ri--on disappears faster?
Antara set radas yang berikut, yang manakah menunjukkan pita magnesium hilang
paling cepat?
A
B
C
D
3et /
3et //
3et ///
3et /7
1!! cm4of
9itric acid
' mol dm(4
1!! cm4
asid nitrik
' mol dm(4
1!! cm4of
3ulphuric acid
' mol dm(4
1!! cm4
asid sulfurik' mol dm(4
1!! cm4of
Ethanoic acid
' mol dm(4
1!! cm4
asid etan!ik' mol dm(4
'!! cm4of
nitric acid
1 mol dm(4
'!! cm4
asid nitrik1 mol dm(4
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10 Which of the following pairs of general formulae and homologue series is correct?
Antara pasangan f!rmula am dan siri h!m!l!g berikut, $ang manakah betul$
A
General formla
Formula am
!omolo"e #er$e#
Siri homolog
"nH'n 0l%ane
Alkana
"nH'n:' 0l%eneAlkena
"nH'n:1;H 0lcohol
Alc!h!l
"nH'n:1";;H Ester
3ster
11 Diagram 4 shows a set(up of apparatus of a redox reaction.
Rajah 7 menunjukkan susunan radas suatu tindak balas red!ks.
Diagram 4
Rajah 7
Which of these statements are not %orre%t?
Antara penyataan berikut yang manakah tidak benar$
A Electron flows from electrode P to Q
3lektr!n mengalir dari elektr!d / ke 0
B /ron*//+ ions act as the reducing agent and is oxidi6ed'!n 6erum&''( bertindak sebagai agen penurunan dan di!ksidakan
G
0cidified potassium manganate *7//+ solutionarutan kalium manganat &5''( berasid
3ulphuric acidAsid sulfurik
/ron *//+ sulphate
6erum &''( sulfat
& '"ar-on electrodes
3lektr!d karb!n
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C 0cidified potassium manganate *7//+ solution turns colourless
Warna larutan kalium manganat &5''( berasid bertukar menjadi tidak berwarna
D ,anganate *7//+ ion) ,n;5(acts as the reducing agent and is reduced
'!n manganat &5''(, )n#8-bertindak sebagai agen penurunan dan diturunkan
12 Which of the following reaction causes the -ea%er to -ecome hot?
Antara tindak-tindak balas yang berikut, yang manakah menyebabkan bikar
menjadi panas$
A 0dding water to solid ammonium nitrate
)enambahkan air kepada pepejal amm!nium nitrat
B 0dding water to solid sodium h$droxide
)enambahkan air kepada pepejal natrium hidr!ksida
C 0dding water to solid potassium nitrate)enambahkan air kepada pepejal kalium nitrat
D 0dding water to solid ammonium sulphate
)enambahkan air kepada pepejal amm!nium sulfat
13
What t$pe of medicine is paracetamol?
Apakah jenis ubat parasetam!l?
A 0nalgesic
Analgesik
B 0nti-iotic
Antibi!tik
C Ps$chotherapeutic
/sik!teraputik
D 0ntips$chotic
Antipsik!tik
14
'..8
1usunan elektr!n : ;. 1
+ilangan neutr!n : >?
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A 48
B 44
C 41
D 4!
15 The mass of one atom of element = is two times more than an atom of ox$gen. What is
the relati#e atomic mass of element =? @&elati#e atomic massA ; > 1+
*isim > at!m unsur 9 adalah dua kali lebih berat dari satu at!m !ksigen. +erapakah jisim
at!m relatif bagi unsur 9$ @*isim at!m relatif # : >?(
A 1'
B '5
C 4'
D 4
16 Diagram 5 shows the s$m-ol of an element B .
Rajah 8 menunjukkan simb!l unsur *.
Diagram 5
Rajah 8
The position of element B in the Periodic Ta-le is
%edudukan unsur * dalam *adual +erkala adalah
Period
%ala
roup
%umpulan
A ' 1C
B 4 1C
C ' 1
D 4 1
17 Element is located in roup 15 of the Periodic Ta-le. Element = has a proton num-er of
1C. Which of the following shows the formula and t$pe of compound formed when
element com-ines with element =?
nsur B terletak di %umpulan >8 dalam *adual +erkala. nsur 9 mempunyai n!mb!r
pr!t!n >C. Antara berikut yang manakah menunjukkan f!rmula dan jenis sebatian yang
terbentuk apabila unsur B berpadu dengan unsur 9$
ormula
6!rmula
T$pe of "ompound
*enis 1ebatian
A =' /onic
'!nik
B19
9
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B 5= "o#alent
%!2alen
C = /onic
'!nik
D =5 "o#alent
%!2alen
18 "hoose the correct function of food additi#es.
/ilih fungsi bahan tambah makanan yang betul.
ood additi#e
+ahan tambah makanan
unction
6ungsi
A 3ta-ilisers
/enstabil
To pre#ent the sta-ili6ation of food
ntuk menghalang penstabilan makanan
B Preser#ati#es
5+
+erapakah jisim kuprum yang dihasilkan apabila ink yang berlebihan ditambahkan
ke dalam ;= cm7D.; m!l dm-7larutan kuprum&''( sulfat$ @*isim at!m relatif Eu :?8(
A !.1 g
B !.4' g
C !.C8 g
D 1.C! g 2ime waterHeat
B
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Apabila * dipanaskan, air kap!r menjadi keruh.
Antara sebatian berikut yang manakah mungkin *$
A
B
C
D
Potassium %ar-onate
%alium karb!nat
"alcium nitrate
%alsium nitrat
3odium car-onate
atrium karb!nat
2ead*//+ car-onate
/lumbum&''( karb!nat
22 Which of the following su-stances can -e used to differentiate ethane and ethene?
Antara bahan berikut, yang manakah b!leh digunakan untuk membeakan antara etana dan etena?
A 2ime water
Air kapur
B
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23 Ta-le 1 shows the mixture of 6inc car-onate and h$drochloric acid used in experiments to stud$
the rate of reaction.
Badual 1 menunGu%%ancampuran ink karb!nat dengan asid hidr!kl!rik yang digunakan dalam
eksperimen untuk mengkaji kadar tindak balas .
()*er$ment
Eksperimen
$n% %ar,onate
zink karbonat
!-.ro%/lor$% a%$. !Cl
Asid hidroklorik
a## "
Jisim (g)
&/-#$%al
form
Bentuk
fizikal
Volme
Isipadu
%m3
Con%entrat$on
Kepekatan
mol .m3
/ 8ranule
+utiran8! !.1
// 8
Powder
1erbuk
'8 !.'
Ta-le 1 *adual
Which of the following graphs represent the two experiments?
Antara graf berikut, yang manakah mewakili kedua-dua eksperimen itu?
A B
C D
7olume of ";'cm4
'sipadu";'cm4
7olume of ";'cm4
'sipadu";'cm4
7olume of ";'cm4
'sipadu";'cm4
7olume of ";'cm4
'sipadu";'cm4
Times
)asaFs
Times
)asaFs
Times
)asaFs
Times
)asaFs
/// /
//
/
//
///
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24 The heat of neutralisation -etween h$drochloric acid and sodium h$droxide solution is higher
than the heat of neutralisation -etween ethanoic acid and sodium h$droxide solution -ecause
Haba peneutralan antara asid hidr!kl!rik dan larutan natrium hidr!ksida adalah lebih tinggi
berbanding haba peneutralan antara asid etan!ik dan larutan natrium hidr!ksida kerana
A
energ$ is needed to ionise the ethanoic acid.
tenaga diperlukan untuk mengi!nkan asid etan!ik
B
the reaction -etween ethanoic acid and sodium h$droxide solution is incomplete.
tindak balas antara asid ethan!ik dan larutan natrium hidr!Gida adalah tidak lengkap
C
h$drochloric acid is a mineral acid whereas ethanoic acid is an organic acid.
asid hidr!kl!rik adalah asid mineral manakala asid etan!ik adalah asid !rganic
D
D
h$drochloric acid and ethanoic acid ha#e different pH #alues.
asid hidr!kl!rik dan asid etan!ik mempunyai nilai pH yang berbea.
25 Wh$ are detergents more effecti#e than soap?
)engapakah detergen lebih berkesan daripada sabun?
A Detergents are -iodegrada-le whereas soaps are non(-iodegrada-le.
4etergen b!leh terurai manakala sabun tidak terurai
.
B Detergents reduce the surface tension of water whereas soaps do not.
4etergen mengurangkan ketegangan permukaan air manakala sabun tidak.
C Detergents are solu-le in grease) whereas soaps are insolu-le in grease.4etergen larut dalam gris, manakala sabun tidak larut dalam gris.
D Detergents do not form scum in hard water) whereas soaps form scum in hard water.
4etergen tidak membentuk kekat dalam air liat manakala sabun membentuk kekat dalam air liat.
26 Diagram 1! shows the set up of an experimen to in#estigate transfer of electrons at a distance
Rajah1! menunjukkan susunan radas bagi mengkaji pemindahan elektr!n pada suatu jarak
Diagram 1!
Rajah >D
Which of the following statements are true?
Antara pernyataan berikut yang manakah benar$
/
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//
///
/7
+r!min bertindak sebagai agen peng!ksida
"olourless solution change to -rown at car-on =
arutan tanpa warna berubah kepada perang di karb!n 9
Electrons flow from car-on = to car-on through the outer circuit
3lektr!n mengalir dari karb!n 9 ke karb!n B melalui litarluar
;xidation num-er of iodine changes from ! to (1
!mb!r peng!ksidaan i!din berubah daripada D kepada ->
A
B
C
D
/ and // onl$
/ dan//sahaja
/// and /7 onl$
/// dan/7sahaja
/) // and /// onl$/) // dan///sahaja
/) //) /// and /7
/) //) /// dan/7
27 Which of the following pairs of ion has the same of num-er of electrons?
@Proton num-erA 2i > 4 ) ; > ) > F ) 9a > 11 ) ,g > 1' ) "l > 1C ) "a > '! I
Antara pasangan i!n yang berikut, yang manakah mempunyai bilangan elektr!n yang sama?
@!mb!r /r!t!nA 2i > 4 ) ; > ) > F ) 9a > 11 ) ,g > 1' ) "l > 1C ) "a > '! I
A
B
C
D
"l(
and (
"l( dan(
9a:and 2i:
9a:dan2i:
"a':and ,g':
"a':dan,g':
,g':and ;'(
,g':dan;'(
28 Ta-le ' shows information a-out two t$pes of elements.
*adual 'menunjukkan maklumat bagi dua jenis unsur.
Element
nsur
Proton num-er
!mb!r pr!t!n
Electron configuration
1usunan elektr!n
=
F
1C
'.
'..
Ta-le '
*adual ;
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A /nert gases
"as nadir
B 9egati#e ions
'!n negatif
C 0toms of metals
At!m l!gam
D /sotopes of the same element
's!t!p unsur yang sama
29 Diagram 11 shows the s$m-ols for two elements.
The letters used are not the actual s$m-ol of the elements
Rajah 11menunjukkan simb!l bagi dua unsur
Huruf yang digunakan bukan simb!l sebenar unsur itu
Diagram 11
Rajah11
Which of the following is true a-out B and ,?
Antara berikut yang manakah benar tentang * dan )$
A
B
C
D
0tomic si6e of B is larger than ,1ai at!m * lebih besar daripada )
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31 The diagram -elow shows the set(up of the apparatus for electrol$sis of concentrated
solution of sodium chloride
What is the product formed at the anode and cathode?
0node "athode
A ;' H'B "l' H'C "l' 9a
D ;' "l'
32 The diagram -elow shows 8 steps for preparing a standard solution of sodium h$droxide)
9a;H -ut not in correct order.
Which of the following steps is correct?
A
B
CD
Q) 3) P) &) T
&) Q) 3) P) T
Q) P) 3) &) T&) Q) 3) T) P
33 The diagram -elow shows the test tu-es containing lead*//+ nitrate solution and
potassium car-onate solution -ut without a la-el. Which of the following solutions can
-e used to distinguish -oth solutions?
P( Transfer the solid sodium h$droxide into #olume into the #olumetric flas%.Q( Weigh the mass of sodium h$droxide&( 0dd distilled water until the graduation mar%.3( &inse the weighing -ottle and pour the solution into the #olumetric flas%.T( 3ha%e the #olumetric flas%.
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/
//
///
/7
A
B
CD
3odium nitrate
3odium iodide
Dilute nitric acid
Potassium sulphate
/ and // onl$
// and /7 onl$
//) /// and /7 onl$/) //) /// and /7
34 Which of the following is the alcohol produced from the al%aline h$drol$sis of oil?
A
B
C
D
Ethane(1)'(diol
l$cerol
"$clohexanol
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B
C
D
!.'8 cm4s
!.1C cm4s
!.14 cm4s
36 When a mixture of '(-utanol) "H4"H;H"H'"H4and concentrated sulphuric acid is
heated) gas is produced. Which of the following is the molecular structure of ?
A
B
C
D
"H4"H>"H"H4"H4"H>"*"H4+'*"H4+'"H"H>"H'"H4"H'"H>"H'
37 The diagram -elow shows the changes of the sulphur in "ontact Process.
3 3;' 3;4 H'3';C
Which of the following are the correct changes in the oxidation state of sulphur?
A
B
C
D
! :5 : :
! :5 : :C
1 :4 : :
1 :5 : :
38 The following equation shows the formation of water
H'*g+ : J ;'*g+ K H';*l+ ) LH > M 'C %BmolNO
Which of the following is true regarding the a-o#e equation?
A
B
C
D
0cti#ation energ$ for the reaction is high
/f 1 mole of ox$gen reacts 8C5 %B of heat energ$ is a-sor-ed
"om-ustion of 1 mole of h$drogen releases 'C %B of heat energ$
1 mole of water that is formed in the reaction recei#ed 'C %B heat energ$
39
Which of the following medicines is most appropriate in treating the a-o#e s$mptoms or
disorders?
A
B
C
D
"hlorproma6ine
0mphetamine
Tranquilisers
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40 Which of the following isotopes is used to detect lea%age in a gas pipe.
.
A
B
C
D
"ar-on 15
"o-alt !
3odium '5
/odine 141
51. Diagram 15 shows the energ$ le#el diagram of the displacement reaction -etween magnesium
and iron*//+ chloride solution.
Rajah >8 menunjukkan gambar rajah aras tenaga bagi tindak balas penyesaran antara
magnesium dan larutan ferum&''( sulfat.
What is the increase in temperature if 8! cm4 of !.'8 mol dm(4iron*//+ chloride solution is
reacted with excess magnesium)?
+erapakah kenaikan suhu, jika =D cm7 D.;= m!l dm-7larutan ferum&'''( kl!rida ditindak
balaskan dengan berlebihan magnesium $
@3pecific heat capacit$ of the solution > 5.' B g (1 o"(1I
@)uatan haba tentu larutan> 5.' B g(1 o"(1I
0 1'o"
< 1o"
" ''o"
D '5o"
5'. Ta-le 4 shows the results of an experiment for three chemical cells P) Q and &.
*adual 7 menunjukkan keputusan eksperimen bagi tiga sel kimia /, 0 dan R.
C/em$%al %ell
Sel kimia
&a$r# of metal#
Pasangan logam
Volta"e V
oltan V
e"at$e term$nal
!erminal negatif
P = !.58
Q !.!
& = 1.!8
Ta-le 4
*adual 7
Energ$
,g*s+ : e"l'*aq+
e*s+ : ,g"l'*aq+
H> ( '!1. %Bmol(1
Diagram 15
Rajah >8
Tenaga
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Which of the following arrangements of metals ) = and is in descending order of
electropositi#it$ in the electrochemical series?
Antara berikut yang manakah susunan l!gam B,9 dan Z mengikut tertib elektr!p!sitif
menurun dalam siri elektr!kimia$
0 ) ) =
< ) =)
" ) =)
D ) ) =
54. Diagram 18 shows cur#e W o-tained from the decomposition of '! cm4of !.5! mol dm(4
h$drogen peroxide solution) H';') using !.' g of manganese */7+ oxide as catal$st at a
temperature of 4! !".
&ajah >= menunjukkan lengkung W terbentuk daripada penguraian ;D cm7larutan hidr!gen
per!ksida D.8D m!l dm-7, di mangkinkan !leh mangan&'5( !ksida pada suhu 7DDE.
Diagram 18
Rajah >=
Which of the following experiments will produce cur#e ?
Antara eksperimen berikut yang manakah akan menghasilkan lengkung B$
7olume of H';' cm4
'sipadu H;#;Fcm7
"oncentration of H';' mol dm(4
%epekatan H;#;Fm!l dm-7
Temperature !"1uhu F DE
0 1! !.! 4!
< 18 !.'! 4!
" '! !.! 5!
D 4! !.4! 5!
55. Ta-le 5 shows the melting and -oiling points of su-stances P) Q) & and 3..*adual 8 menunjukkan takat lebur dan takat didih untuk bahan /, 0, R dan 1..
3u-stance
+ahan
,elting point !"
Takat lebur F DE
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Which of the following su-stances has the highest %inetic energ$ at room temperature?
Antara bahan berikut yang manakah mempunyai tenaga kinetic yang paling tinggi pada suhu
bilik$
0 P
< Q
" &
D 3
58. The following equation shows the complete com-ustion of propene gas.
/ersamaan berikut menunjukkan pembakaran gas pr!pene
"4H*g+ : F' ;'*g+ K 4";'*g+ : 4H';*g+
Which of the following statements are true when 1 mol of propene gas is -urnt completel$$
@&elati#e molecular mass A "4H >5') ;'>4') ";'>55) H';> 1) ,olar #olume of gas is
''.5 dm4mol 1 at 3.T.P.I
9ang manakah antara pernyataan berikut adalah benar apabila > m!l gas pr!pene terbakar
secara lengkap$@*isim m!lekul relatif "4H>55) ;'>4') ";'>55) H';> 1) 'si padu m!lar gas ;;.8 dm
7
m!l >pada 1.T./.I
/ "omplete com-ustion of !.1 mol of propene produces 8.5 g of water
/embakaran lengkap D.> m!l gas pr!pena menghasilkan =.8 g air
// "omplete com-ustion of 1 mol of propene gas produces ' mol of water/embakaran
lengkap > m!l gas pr!pene menghasilkan ; m!l air
/// "omplete com-ustion of 5.' g of propene requires 15.5 g of ox$gen.
/embakaran lengkap 8.; g gas pr!pena memerlukan >8.8 g gas !ksigen
/7 "omplete com-ustion of !.1 mol of propene produces .C' dm4car-on dioxide gas ats.t.p.
/embakaran lengkap D.> m!l pr!pena akan menghasilkan ?.C; dm7gas karb!n
di!ksida pada s.t.p
0 / and // onl$
< / and /7 onl$
" // and /7 onl$
D /) /// and /7
5. 0mmonium sulphate) *9H5+'3;5is an example of a fertili6er.
"alculate the percentage of nitrogen in 1 mole of ammonium sulphate.
@&elati#e atomic massA 9>15) H>1) 3>)4') ;>1I
Amm!nium sulfat,*9H5+'3;5adalah satu c!nt!h baja.
Hitungkan peratus nitr!gen dalam > m!l amm!nium sulfat.
@*isim at!m relatifA 9>15) H>1) 3>)4') ;>1I
0 1'.1' R
< '1.'1 R
" '4.'4 R
D 41.41 R
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5C. Diagram 1 shows the preparation of lead*//+ chloride salt.
Rajah >? menunjukkan persediaan garam plumbum&''( kl!rida.
Diagram 1
Rajah >?
What is the concentration of the h$drochloric acid needed to react completel$ with
lead*//+ nitrate solution?
+erapakah kepekatan larutan asid hidr!kl!rik yang diperlukan untuk bertindak balas lengkap
dengan larutan plumbum&''( nitrat?
0 !.8 mol dm(4
< 1.! mol dm(4
" 1.8 mol dm(4
D '.! mol dm(4
5. Which of the following food additi#es can -e used to ma%e food sta$ fresh longer and taste
-etter?Antara bahan tambah makanan berikut yang manakah b!leh digunakan untuk mengekalkan
kesegaran makanan dan meningkatkan rasanya$
0 3odium -en6oate and tartra6ine
atrium ben!at dan tartraina
< 3odium -en6oate and ascor-ic acid
atrium ben!at dan asid ask!rbik
" ,onosodium glutamate and tartra6ine
)!n!natrium glutamat dan tartraina
D 0scor-ic acid and monosodium glutamate
Asid ask!rbik dan m!n!natrium glutamat
8! cm4of
1.! mol dm(4
lead*//+ nitrate
solution
=D cm7
>.D m!l dm-7
larutan
plumbum&''(
nitrat s!luti!n
8! cm4of
h$drochloric
acid
=D cm7
asid
hidr!kl!rik
:White
precipitate
)endakan
putih
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5F Diagram 1C shows the process to produce compound B.
Rajah >C menunjukkan pr!ses menghasilkan sebatian *.
:
Diagram 1C
Rajah >C
Which of the following structural formulas is of compound B?Antara f!rmula struktur yang manakah bagi sebatian *$
0
" ;xidation num-er of manganese increases from :' to :C
!mb!r peng!ksidaan mangan bertambah dari J ; ke JC
D Electrons flow from potassium iodide solution to acidified potassium manganate*7//+
through sulphuric acid
3lektr!n mengalir dari larutan kalium i!dida ke larutan kalium mangnanat&5''(
berasid melalui asid sulfurik
(D O '(SIO &A&(:
KE"!AS S#A$A% !A&A!
0cidified potassium
manganate*7//+ solution
arutan kalium
manganat&5''( berasid
"ar-on electrode
3lektr!d karb!n
Dilute sulphuric acid
Asid sulfurik cair
Potassium iodide
solution
arutan kalium
i!dida