Trial Chemistry Paper 2 SPM 2013

8/13/2019 Trial Chemistry Paper 2 SPM 2013

1/18

SULIT 4541/2

Section ABahagian A

[ 60 marks][ 60 markah ]

Answer allquestions in this sectionJawab semuasoalan dalam bahagian ini.

1 Table 1.1 shows five substances and their respective formulaeJadual 1.1 menunjukkan lima bahan dengan formula kimia masing-masing.

SubstanceBahan

hemical formulaFormula kimia

!odineIodin

!"

#ithiumLihium

#i

Acetamide.!seamida

$%&'$"

(a)nesium o*ide"agnesium oksida

()&

opper o*ide#u$rum oksida

u&

Table 1.1Jadual 1.1

+a, State one compound from Table 1 which e*ists as a molecule%&aakan sau sebaian dari Jadual 1 &ang wujud sebagai molekul.

-----------------------------------.[1 mark]

+b, 'ame the process of chan)e in state of matter when solid iodine is heated to formiodine )as.%amakan $roses $erubahan keadaan jirim a$abila $e$ejal iodine menjadi gas a$abiladi$anaskan

-----------------------------------.[1 mark]

+c, raph 1." shows the temperature a)ainst time when liquid acetamide is cooled from/0o to %0o.'raf 1.( menunjukkan graf suhu melawan masa a$abila )e)air a)eamida disejukkandari *0o+ ke$ada ,0o+.


2/18

SULIT 4541/2

Temperatureo

/0

"

%0

Times t0 t1 t" t%

raph 1."

+i, 2hat is meant b3 free4in) point 5!$akah &ang dimaksudkan dengan aka beku

--------------------------------...[1 mark]

+ii, ased on raph 1."7 state the free4in) point of acetamide.Berdasarkan 'raf 1.( n&aakan aka beku bagi a)eamida.

--------------------------------...[1 mark]

+iii, 8*plain wh3 there is no chan)e in temperature from t1to t"./erangkan menga$a iada $erubahan suhu dari 1ke (.

--------------------------------...

--------------------------------...[" marks]

+d, 9ia)ram 1.% represent an atomic structure of lithium atom.ajah 1., mewakili srukur aom bagi aom liium.

9ia)ram 1.%

2


3/18

SULIT 4541/2

+i, 2hat do the s3mbols below represent 5!$akah &ang diwakili oleh simbol-simbol di bawah.

[1 mark]

+ii, alculate the nucleon number of lithium.iungkan nombor nukleon bagi liium.

[1 mark]

+e, 8mpirical formulae for ma)nesium o*ide and copper o*ide can be determine b3 twodifferent method.Formula em$irik bagi magnesium oksida dan ku$rum oksida boleh dienukan dengandua kaedah &ang berbe2a.

:ou are )iven combustion tube with a small hole at the end7 )lass tube7 retort standand clamp7 stopper7 copper o*ide and dr3 h3dro)en.9raw the set;up of apparatus for the e*periment to determine empirical formula ofcopper o*ide.

!nda dibekalkan dengan iub $embakaran berlubang ke)il dihujungn&a iub ka)a kakireo dengan $emegang gabus ku$rum oksida dan gas hidrogen kering.Lukiskan susunan radas bagi eks$erimen menenukan formula em$irik ku$rum oksida.

[" marks]

3


4/18

SULIT 4541/2

2 Table ".1 shows some of the elements found in


5/18

SULIT 4541/2

+ii, 8*plain 3our answer in d+i,/erangkan jawa$an anda di d5i.

--------------------------------...

--------------------------------...

--------------------------------...[% marks]

+e, 2hen sodium is burnt in chlorine )as 7 a white solid is obtained .!$abila narium dibakar di dalam gas klorin$e$ejal $uih erbenuk.

+i, 2rite the equation for the reaction./uliskan $ersamaan kimia bagi indak balas ersebu.

--------------------------------...[1 mark]

+ii, 'ame the t3pe of chemical bonds that are formed in the product./uliskan jenis ikaan &ang erbenuk di dalam hasil ersebu.

--------------------------------...[1 mark]

3 =i)ure %.1 shows a voltaic cell.ajah di bawah menunjukkan sebuah sel kimia.

=i)ure %.1

+a, 2hat is the ener)3 conversion that takes place in cell above.!$akah $erubahan enaga &ang berlaku dalam sel di aas.

------------------------------------.[1 mark]

+b, +i, State the ne)ative terminal of the cell.%&aakan erminal negai7e sel ersebu.

---------------------------------[1 mark]

5


6/18

SULIT 4541/2

+ii, 8*plain 3our answer in +b, +i,./erangkan jawa$an anda di 5b 5i.

---------------------------------[1 mark]

+c, State the colour chan)e in iron+!!, sulphate solution5%&aakan $erubahan warna laruan ferum5II sulfa.

------------------------------------[1 mark]

+d, 2hat is the function of the salt brid)e in this e*periment.!$akah fungsi iian garam dalam e8$erimen ini.

-----------------------------------.[1 mark]

+e, &n the dia)ram7 draw arrows to indicate the direction of the electron flow.3ada rajah lukis arah aliran ele)ron.

-----------------------------------..[1 mark]

+f, At which electrode does o*idation occur5 8*plain 3our answer in term of electrontransfer.3ada elekrod manakah berlaku $roses $engoksidaan /erangkan jawa$an anda darisegi $emindahan elekron.

-----------------------------------...

------------------------------------[" marks]

+), 2rite the half equation at anode./ulis seengah $ersamaan di anod.

------------------------------------

------------------------------------[1 mark]

+h, 0.0>6 ) iron metal is deposited at iron electrode. alculate the number of iron atomsdeposited 50.096 g logam ferum erena$ $ada elekrod ferum. iung bilangan aom ferum &angerena$.[?elative atomic mass @ =e7 >6 Avo)adroBs constant C 6.0" * 10"%]


7/18

SULIT 4541/2

[1 mark]

D. 9ia)ram D.1 shows the apparatus used in the titration process between an aqueouspotassium h3dro*ide solution and dilute sulphuric acid usin) indicator A.ajah :.1 menunjukkan $roses $eniraan anara laruan akueus kalium hidroksidadengan asid sulfurik )air dengan menggunakan $enunjuk !.

9ia)ram D.1 ajah :.1+a, 'ame

%amakan@+i, Apparatus .0 cm% laruan kalium hidroksida 1.0 mol dm;%.

iung kemolaran asid sulfurik )air.

[" marks][" markah]

+c, Table D." shows ethanoic acid7 $%&&$ in three different states and the observationsthat obtained when tested with moist blue litmus paper.Jadual :.( menunjukkan asid eanoik &ang berada dalam iga keadaan berbe2a dan

$emerhaian &ang di$erolehi a$abila diuji dengan keras limus biru lembab.

+i, 'ame the ion which is responsible for chan)in) the colour of blue litmus paper tored.%amakan ion &ang men&ebabkan $erubahan $ada warna keras limus biru

ke$ada merah.

. .............................................................................................................................[1 mark]

8


9/18

SULIT 4541/2

[1 markah]

+ii, 8*plain wh3 there is no chan)e on blue litmus paper in 8*periment !!!. /erangkan menga$a iada $erubahan $ada keras limus biru dalam .!a" ron4e is an allo3 of copper.'angsa ialah sau aloi unuk ku$rum.

+i, 'ame the element that is added to copper to form bron4e.%amakan unsur &ang diambahkan ke$ada ku$rum unuk membenukgangsa.

--------------------------------- [1 mark] [1 markah]

+ii, 8*plain wh3 bron4e is harder than pure copper./erangkan menga$a gangsa lebih keras dari$ada ku$rum ulen.

---------------------------------.

---------------------------------.

---------------------------------.

--------------------------------- [" marks] [1 markah]

+iii, 9raw the arran)ement of particles in pure copper and bron4e.Lukiskan susunan 2arah di dalam ku$rum ulen dan gangsa.

#

Pure co$$er

Kuprum tulen

%ron&eGangsa


10/18

SULIT 4541/2

[" marks]+b, 9ia)ram > shows an industrial preparation of sulphuric acid b3 the ontact

menunjukkan $enghasilan se)ara indusri asid sulfurik melalui 3roses=enuh.

+i, State the name of compound E.%&aakan nama sebaian E.

--------------------------------- [1 mark] [1 markah]

+ii, 2rite a chemical equation of the reaction at sta)e !!.

/uliskan $ersamaan kimia bagi indakbalas $eringka !!.

--------------------------------- [1 mark] [1 markah]

+iii, The chemical equation below shows the reaction between sulphur ando*3)en )as at Sta)e !.3ersamaan kimia di bawah menunjukkan indak balas anara sulfur dangas oksigen $ada3eringka !.

S F &" G S&"

alculate the ma*imum volume of sulphur dio*ide )as produced if D ) ofsulphur is burnt completel3 in o*3)en )as.[?elative atomic mass of S C %"7 & C 16 and the molar volume of an3 )asis "D dm%mol;1at room temperature and pressure]

iungkan isi$adu maksimum sulfur dioksida &ang erhasil jika D )sulfurerbakar lengka$ dalam gas oksigen.[Jisim aom relaif S C %"7 & C 16 dan isi$adu molar sebarang gas adalah"D dm%mol;1$ada suhu dan ekanan bilik]

1'

S SO2

SO3

X H2SO

4

()*gen +

OksigenConcentrated H

2SO

4+

H2SO

4pekat

,ater +

Air

Stage I /

Peringkat I

-iagram 5+Rajah5

Stage II /

Peringkat IIStage III /

Peringkat III

Stage IV /

Peringkat IV

()*gen +

Oksigen


11/18

SULIT 4541/2

[% marks] [% markah]

6 The thermochemical equation below represents the combustion reaction of an alcohol in theair.3ersamaan ermokimia dibawah mewakili indak balas $embakaran suau alkohol di udara.

D$/&$ F 6&" D&" F >$"& H$ C ;"6I/ kJ mol;1

+a, +i, State the name of the alcohol in the above equation.%&aakan nama alkohol di dalam $ersamaan di aas.

[1 mark][1markah]

+ii, 2hat is meant b3 KH$ C ;"6I/ kJ mol;1B in the above equation5!$akah &ang dimaksudkan dengan KH$ C ;"6I/ kJ mol;1>? dalam $ersamaandi aas

[1 mark] [1markah]

+b, 0.%I) of the alcohol that is named in +a,7 used to heat >00 ) of water.0.%I) alkohol &ang dinamakan di 5a digunakan unuk memanaskan >00 )air.alculate7iungkan

+i, the heat released b3 the alcohol in the reaction.[(olar mass of the alcohol C ID ) mol ;1]haba &ang dibebaskan oleh alkohol iu dalam indak balas[Jisim molar alkohol @ ID )mol;1]

[1 mark] [1markah]

the temperature chan)e of water e*pected in the e*periment in +b,[Specific heat capacit3 of water@ D." J );1o;1]$erubahan suhu air &ang dijangkakan dalam eks$erimen ini.[aba enu airA D." J );1o;1]

[" marks] ["markah]

11


12/18

SULIT 4541/2

9raw the ener)3 level dia)ram for the combustion of the alcohol.Lukiskan gambar rajah aras enaga unuk $embakaran alkohol ersebu.

[" marks] ["markah]

Table 6 shows the heat of combustion of various alcohols.Jadual 6 menunjukkan haba $embakaran $elbagai alkohol.

Number ofcarbon atomsBilangan atom

karbon

Molecular formulaFormula molekul

Name of alcoholNama alkohol

Heat ofcombustion

Haba pembakara(kJ mol-1)

1 $%&$ (ethanol ;I"6" "$>&$ 8thanol ;1%I6

% %$I&$


13/18

SULIT 4541/2

[" marks] ["markah

]Section B

Bahagian B

["0 marks][(0 markah]

Answer an3 onequestion from this sectionJawab mana-mana satusoalan dari$ada bahagian ini.

I +a, 8thene )as is bubble throu)h bromine water.'as eena dialirkan melalui air bromin.

+i, 2hat is the observation and state the t3pe of reaction happens5!$akah $emerhaian dan n&aakan jenis indak balas &ang berlaku5

+ii, ive the name and draw the structure formula of the molecule of the product.Berikan nama dan lukis formula srukur bagi molekul hasil indak balas.

[D marks][D markah]

+b, A h3drocarbon L contains ".I>M of carbon b3 mass.=au hidrokarbonL mengandungi".I>M karbon mengiku jisim.[?elative atomic mass@ $C17 C1"][Jisim aom relaif@ $C17 C1"]

+i, alculate the empirical formula of L.

$iungkan formula em$irik L.

+ii, 9etermine the molecular formula of L if relative molecular mass of L is >./enukan formula molekul bagiLjika jisim molekul relaif Ladalah >.

[I marks][I markah]

+c, ompare the properties of vulcanised rubber and unvulcanised rubber.Bandingkan sifa-sifa geah er7ulkan dan geah ak er7ulkan.

:our answers should be included the followin) properties of rubber@

Jawa$an anda hendaklah mengandungi sifa-sifa geah se$eri beriku@

+i, 8lasticit3#eken&alan

+ii, Stren)th and hardness#ekuaan dan kekerasan

+iii, ?esistance toward o*idation#eahanan erhada$ $engoksidaan

ive the reasons for all the properties above.Berikan sebab bagi semua sifa-sifa di aas.

13


14/18

SULIT 4541/2

[/ marks][/ markah]

8 =i)ure shows the electron arran)ement for atoms markah]

+b, Atoms < and N can form chemical bonds with atom ?.!om 3 dan C boleh membenuk ikaan kimia dengan aom .

State the t3pe of chemical bond and e*plain how the bond is formedbetween@%&aakan jenis ikaan kimia dan erangkan bagaimana ikaan erbenukanaraA+i, Atoms < and ?+ii, Atoms N and ?

[11 marks][11 markah]

+c, State one ph3sical propert3 of the compound formed in +b, +i, and thecompound formed in +b, +ii,. 8*plain the differences in the ph3sical propert3stated.%&aakan sau sifa fi2ik bagi sebaian &ang erbenuk di 5b5i dan bagisebaian &ang erbenuk di 5b5ii. /erangkan $erbe2aan bagi sifa fi2ik &angdin&aakan.

[D marks] [D markah]

14

P. /

Atom P Atom . Atom /


15/18

SULIT 4541/2

Section !["0 marks]

!nswer an& oneDuesion.5Jawab mana-mana satusoalan

" +a, An o*idisin) a)ent in a reaction can also become a reducin) a)ent inanother reaction. 9iscuss this statement based on the reactionsrepresented b3 the followin) equations @=au agen $engoksidaan dalam suau indak balas boleh juga menjadiagen $enurunan dalam indak balas &ang lain. Bin)angkan $ern&aaan iniberdasarkan indak balas &ang diunjukkan dalam $ersamaan berikuA

i, "!2"!2"!"!2 322

aqBraqFeaqBraqFe ++

++

ii, "!"!"!"! 22

aqZnsFesZnaqFe ++

++ [D marks]

[D markah]

+b, 9isplacement reaction between ma)nesium and copper+!!, sulphatesolution can also be classified as a redo* reaction. 2ith the aid of half;equations7 e*plain the above statement in terms of chan)e in o*idation

number./indak balas $en&esaran anara magnesium dan laruan ku$rum5II sulfaboleh juga dikelaskan sebagai sau indak balas redoks. ;engan banuanseengah $ersamaan jelaskan $ern&aaan di aas dari segi $erubahandalam nombor $engoksidaan.

[D marks] [D markah]

+c, +i, State the meanin) of oxidation and reduction in terms of electrontransfer.%&aakan maksudpengoksidaandanpenurunandari segi $emindahanelekron. [" marks]

[" markah]

+ii, A student intends to investi)ate the redo* reaction on the transfer ofelectrons at a distance. 9ia)ram / shows the set up of apparatus used b3the student.=eorang $elajar ingin men&iasa enang indak balas redoks melalui

$emindahan elekron $ada sau jarak. ajah * menunjukkan susunanradas &ang elah digunakan oleh $elajar ersebu.

9!A?A( /

15

%romine 0ater

Air bromin

-ilute sul$huric acid

Asid sulurik !air

ron!"sul$hatesolution

"arutan erum#$$%

sulat

Carbon electrode

Positie terminalCarbon electrodeNegatie terminal


16/18

SULIT 4541/2

9escribe the o*idation and reduction processes in terms of electrontransfer that occur at the ne)ative and positive terminals. 2rite the halfequation for the reaction that takes place at each terminal. State thechan)es that can be observed after 10 minutes./erangkan $roses $engoksidaan dan $enurunan &ang berlaku di erminalnegaif dan erminal $osiif dari segi $emindahan elekron. /uliskanseengah $ersamaan bagi indak balas &ang berlaku di seia$ erminal.'&aakan $erubahan &ang da$a di$erhaikan sele$as 10 mini.

[10 marks] [10 markah]

A )roup of pupils carried out two e*periments to stud3 the rate of reaction betweenma)nesium and two acids7 h3drochloric acid and acid T. Table 10 shows the data from8*periment ! and 8*periument !!.

=ekum$ulan murid elah menjalankan dua eks$erimen unuk mengkaji kadar indak balasanara magnesium dengan dua asid asid hidroklorik dan asid T.Jadual 10 menunjukkandaa dari$ada


17/18

SULIT 4541/2

+ii, 9raw an ener)3 profile dia)ram for the reaction in 1#+a,+i,.&n the ener)3 profile dia)ram show the@

Activation ener)3 without a catal3st7 8a

Activation ener)3 with catal3st7 8Ba

$eat of reaction7 H$

8*plain the ener)3 profile dia)ram

Lukis sau gambar rajah $rofil enaga unuk indak balas di 1#+a,+i,.3ada gambar rajah $rofil enaga iu unjukkan@

/enaga $engakifan an$a mangkin 8a

/enaga $engakifan dengan mangkin 8Ba

aba indak balas H$Jelaskan )ambar raOah profil tena)a itu.

[10 marks[10markah

+b, The )raph in 9ia)ram 10 shows the results of 8*periment ! and 8*periment !!.'raf $ada ajah 10menunjukkan ke$uusan bagi


18/18

SULIT 4541/2

ased on the )raph@Berdasarkan graf

alculate the avera)e rate of reaction for 8*periment !iungkan kadar indak balas $uraa bagi

Trial Chemistry Paper 2 SPM 2013

Documents