cikguadura.files.wordpress.com · created date: 10/30/2012 11:27:30 pm
TRANSCRIPT
http://cikguadura.wordpress.com/
SULIT
The rate of reaction between calcium carbonate and excess hydrochloric acid isstudied by collecting the carbon dioxide gas.Diagram 2l shows the resuits in a gtaph.Katlar tindak balas antqrq kalsiurn karbonat dan asid hidrokbrik berlebihan dikaji dengan mengumpulkangas karbon dioksida.Rajah 21 menunjukkan keputusan dalam bennk graf.
Total voh:qeofcarbondioxide (cm3 )Julrildhisipadukarbondiobida (cmr)
0123456Ti.me (run),l/asa (mtn)
DiagramZlRajah2l
How tnirch time is required for half of the calcilun carbonate to react?Ilerapakah nasayang diperlukan untuk separuh knlsiwn kqrbonat bertindak balus'l
A 0.50 min
B 0,95 min
C I.40 min
D 2.00 min
46 The follorving thermochemical equation represents the displacement of silvcr by zinc,Persanaan tertnokirnia beriktu mewakili penyesoran argentum olelt zink.
Zn+2AgNOg + Zn1NO1)2 t'2Ag
What is the nrass of zinc required to reiease 60.0 kJ of heat?
I Relative atomic mass: Zn:65]lpukuli .lisim zink yang dipetlukan unhrk me mbi:ba,vkan 60.0 kI haba?
lJisinr utom relald: Zn= 65J
A 6.0g
R]O"'' E
i0.8 g
18.0g
23
B
C
D
45rl1 I 1^-')( ) i 2 llal< Cipta lv{ajlis :Unanah ilak; at" t\42\IlA
454,/7
AH: -360 ki
SULTT 24 454U1
47 Diagram 22 shows the structure of two types of mbber J and K.Rajah2T menunjukkan strnktur tlua jenis getohl danK.
Goa, coc -
- -------r
g+Cg*O ^---.-g*G
c=c
- Geo
Rubber J
Getah I
-+.'" \--tl.I *g,
16-'\6 -t\ -------cVina
,/ \-/-----o-
A
B
C
D
Diagram22Rajah22
Which of the following are the correct properties for rubber J and K?Manakah antara berikut adqlah sifut yang betut bagi getah t danK?
Rubber JGetah J
Rubber KGelohK
More elasticLebih kenyal
Less elasticKurans kenvol
Strong and hardKuat dan keras
Weak and softLemah dan lembut
High melting pointl'akat lebur tinpsi
Low melting pointTakat lebur rendah
Easy to oxidizeMudah teroksida
Difficult to oxidizeSuksr terolaidq
The following equation represents the reaction between potassium hydroxide andpotassium dichromate(VI).Persamaan berikut mauakili tindak balas antara kalium hidrokida dan kaliwn dilrorna{yl).
K:CrzOz + 2 KOH ---+ ?K2CrOa + HzOPotassium dichrornate(VI)
Kaltutm dih'onat(YI)
Rubber KGetahK
Potassir.rm cluomate(Vl)Kaliwn kromat(Yl)
48
s9tc/
@t
EYsr-/8/ra/ ,lt
gfls/ fir/
iiE/ llo-/ ri
.:/ i
at
=Vs/</o/b/siWhat happeus to the oxidation number of chromium and pH of the reaction mixture
when aqueous potassium dichromate(Vl) is added to aqueous potassium hydroxide? -SApukah yang berlaku kepada nombor pangoksiduun kramium dan pH cqmpuran tindak balas apabilo 3/kalium dikronrnl(Vl) akueus ditan*ah kepada kulium hiclroksids akueus2 S
C)xidation number of the chromiunrt\ o tn b o r p en so ksl da art k r oni uttt
pH of the mixturepH cumnurun
Remains the sanreKekal sama
DecreasesBerkurans
Remains the sameKekal sama
IncreasesBerlambah
I)ecreasesBerkurang
DecreasesBerkurang
DecreasesBerkurcmp
IncteasesBertambalr
oci$tt/-:!=
5/A I nemains tha;i Slfi
B I Remains the sanre I IncreAseq I €,-t,i/\i
C
L- Berkut:ons I -B;;i';;;;; I FDt- ESq)
9)\*
I4541/1 o2012 Hak Cipta Ivlajlis Amanah Rakyat, IV{AR \ pihat halan. Sasebetaho siit,ITq)
q)\t
,II
j
i
tlll
tl
ti
http://cikguadura.wordpress.com/
http://cikguadura.wordpress.com/
1(n)(1)
SULiT 2
Section ABahagian A
[60 marlrs)160 murkahl
y:t;::):::::;:x):iilT:;:;,::'ii
Diagram 1 shows the apparatus set-up used to determine thesubstance X.Substance X is a white solid and an electrical insulator.Rajoh I nenunjukkan susunail radas bagi menentukan takat lebur bahanX.BahanX adalah pepejal putih dan penebat elektrik.
4541t2
melting point of
lt,ll nt
(o€q)
-\<qa9)
[See \- t pnge
coNFI' .e {Tl,\t,a(Da.o
q)o
<(
(a)
Water.tirSubets$seXBalptX,
Diagram 1
Rajah 1
Substance X melts at 61oC.BqhanX melebur pacla 670C.
(i) Draw the alrangement of particles of substance X at 50 0C,
Lttkiskan susuhdn zarah bahan X pada 5 0 oC,
o/o/cl
SY*'ro/o,/o/
s/rsilr/l+/t
s/r
o/olatl
x\/.s/o/o/o/
6t!€/rl;/ //t Ii/
Heat
4541/2 @ Copyright Rcservtrd l\IAtLA
STII,IT 4s4u2
(iiD Drarv the electron alrangement of the compound in (c)(ii).Lukiskan gambar rajah susunan elehron bagi sebatian dalaru (c)(ii).
[2 marks]p markah)
(d)
(e)
Chiorine is more electronegative than aluminium. Explain.Klorin lebi h elektronegat if daripada alwninium. Terangkan.
fi marlc)
fi markahl
Explain rvhy Argon, Ar exists as a monoatomic gas?
Terangkan tnengcpa Argon, At tvujttd sebagai gas monoalom?
.c/ot/2tsl
JJ/o/.a/or
F/.:7l/s/
12 marksl12 markalf
(E
tso.r<
U)c,ou\
[See g . pa8e
CONFIT ^o rTIAL,t'a.g
qJ.qJ<\
o/olc/
.q)l
€llJ/o/CJ/
s/6tFi+/i/s/
-o/:Jo)l
-b/
(),o/
c,
3lt/+7i/i/
fl
]lrl
1541/2 O Copyright Reserved 1\{ARA
http://cikguadura.wordpress.com/
http://cikguadura.wordpress.com/
http://cikguadura.wordpress.com/