SKOR A KIMIA 2014TAJUK: SEBATIAN KARBONSET 1Diagram 7 shows a flow chart for a series of changes of organic compounds from one homologous series to another homologous series.Rajah 7 menunjukkan carta alir satu siri penukaran sebatian organic daripada suatu siri homologus kepada suatu siri homologus yang lain.

ButaneButana

+ H2 But-1-eneBut-1-ena

Process IProses I+ H2O

C4H10O

+ Ethanoic acidAsidetanoik

Compound QSebatian Q

Diagram 7 / Rajah 7

(a) Both but-1-ene and butane are hydrocarbons. Which hydrocarbon burn with sootier flames. Explain your answer.Kedua-dua but-1-ena dan butana adalah hidrokarbon. Hidrokarbon manakah terbakar dengan nyalaan lebih berjelaga? Terangkan jawapan anda.…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..

[4 marks] (b) b) Butane undergoes complete combustion to produce carbon dioxide and water.

Write the chemical equation for the combustion of butane and calculate the volume of carbon dioxide produce when 600 cm3 of butane is burnt at room condition. [1 mole of gas occupies 24dm3at room condition] Butana menjalani pembakaran lengkap menghasilkan karbon dioksida dan air. Tuliskan persamaan kimia bagi pembakaran butane dan hitung isipadu karbon dioksida yang dihasilkan apabila 600 cm3 butana dibakarpada keadaanbilik.

[1 mol gas menempati 24 dm3pada keadaan bilik

[5 marks]

(c) In Process I,Dalam Proses I,

(i) state the name of Process I and what is the condition needed for but-1-ene to form C4H10O?Nyatakan nama Proses I dan apakah keadaan yang diperlukan bagi but-1-ena membentuk C4H10O?……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

[4 marks](ii) C4H10O can form isomers. Draw two of the isomers in C4H10O and

state the name of the isomer.C4H10O boleh membentuk isomer.Lukiskan dua isomer dalam C4H10O dan nyatakan nama bagi isomer itu.

[4 marks] (d) Compound Q has sweet fruity smell. What are the homologous series and

the name of compound Q? Draw the structural formula of compound Q. Sebatian Q mempunyai bau manis buah-buahan. Apakah siri homologus dan nama bagi sebatian Q? Lukiskan formula strukturbagisebatian Q.

[3 marks]

SKOR A KIMIA 2014TAJUK: SEBATIAN KARBONSET 2Diagram 6.1 shows a series of reactions involving compound P, C2H6O.

Diagram 6.1 /Rajah 6.1(a) (i) State the name of compound P.

Nyatakan nama bagi sebatian P.……………………………………………………………………………...........................................

[1 mark](ii) Draw the structural formula for compound P.

Lukis formula struktur bagi sebatian P.

[1 mark]

(b) Write a chemical equation for the complete combustion of compound P.Tulis persamaan kimia bagi pembakaran lengkap sebatian P.

…………………………………………………………………………………………………………….……[2 marks]

(c) (i) State the name of gas T that produced in reaction III.Nyatakan nama gas T yang terhasil dalam tindak balas III.

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

(ii) Draw the diagram of set-up of apparatus to carry out reaction III in the laboratory.Lukis gambarajah susunan radas untuk menjalankan tindak balas III di dalam makmal.

[2 marks](d) State the change of colour of acidified potassium manganate(VII) solution in

reaction IV.Nyatakan perubahan warna larutan kalium manganat(VII) berasid di dalam tindak balas IV.………………………………………………………………………………………………………………..……………

[1 mark](e) Diagram 6.2 shows the environment pollution from the manufactured substance

of polymer R.Rajah 6.2 menunjukkan pencemaran alam sekitar daripada bahan buatan polimer R.

Polymer RPolimer R

UsesKegunaan

ThrowBuang

Acidic gasGas berasid

BurningPembakaran

Toxic gasGas beracun

Diagram 6.2 / Rajah 6.2Based on diagram 6.2, describe the effect of pollution from the manufactured substance of polymer R on the environment. State one way to overcome the problem.Berdasarkan rajah 6.2, huraikan kesan pencemaran bahan buatan daripada polimer R ke atas alam sekitar. Nyatakan satu cara mengatasi masalah ini.……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….…………………………………………………………………………………………..

[3 marks]

SKOR A KIMIA 2014TAJUK: SEBATIAN KARBONSET 3Table 4 shows the molecular formulae and observations for three compounds when they react with bromine water. Jadual 4 menunjukkan formula molekul dan pemerhatian bagi tiga sebatian apabila bertindakbals dengan air bromin.

CompoundSebatian

Molecular FormulaFormula Molekul

ObservationPemerhatian

P C2H4 Brown colour is decolourisedWarna perang menjadi tidak berwarna

Q C2H6 Brown colour remainsWarna perang tidak berubah

R C4H10

…………………………………………….Table 4Jadual 4

a) i) Name the homologous series for these compounds.Namakan siri homolog bagi sebatian-sebatian ini.

P : ......................................................

Q : ...................................................... ii) Write the general formula for the homologous series of compounds Q and R?

Apakah formula am bagi siri homolog sebatian Q dan R?

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

iii) In Table 4, complete the observation when compound R reacts with bromine water.Dalam Jadual 4, lengkapkan pemerhatian yang berlaku apabila sebatian R bertindakbalas dengan air bromin.

[ 1 mark ]

iv) Name another substance that can replace bromine water.Namakan bahan lain yang boleh menggantikan air bromin.

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

v) Explain why compound P is chemically more reactive than compound Q.Jelaskan mengapa sebatian P lebih reaktif secara kimia berbanding sebatian Q.

...........................................................................................................................................

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

b) One mole of compound P and Q undergo complete combustion to form gas X and water.Satu mol sebatian P dan Q mengalami pembakaran lengkap untuk menghasilkan gas X dan air.

i) Name gas X.Namakan gas X.

...............................…………………………………………………………………………..

[ 1 mark ]

ii) Write a balanced chemical equation when compound P or Q reacts with oxygen.Tulis persamaan kimia yang seimbang apabila sebatian P atau Q bertindak balas dengan oksigen.

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

iii) Explain why the compound P burns with more soot compared to compound Q.Jelaskan mengapa sebatian P terbakar dengan penghasilan jelaga yang lebih banyak daripada sebatian Q.

………………………………………………………………………………………………

…………………….…………………………………………………………………………[2 marks ]

SKOR A KIMIA 2014TAJUK: SEBATIAN KARBONSET 4The flow chart in Diagram 6 shows the relationship between four organic compounds.Carta alir pada Rajah 6 menunjukkan perkaitan antara empat sebatian organik.

Diagram 6 / Rajah 6

(a) Alcohol Q can be changed into an alkene C4H8, through process I. Draw the apparatus setup for the process.Alkohol Q boleh ditukar kepada suatu alkena C4H8, melalui Proses 1. Lukiskan susunan alat radas untuk melakukan proses tersebut.

[2 marks / 2 markah]

(b) (i) Name the alcohol Q.Namakan alkohol Q.

……………………………………………………………………………………………………1mrk

(ii) Name the Process INamakan Proses 1

……………………………………………………………………………………………………(c) (i) What is meant by isomerism?.

Apakah maksud isomerism…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….……………

(ii) Draw and name two isomers of alcohol QLukis dan namakan dua isomer bagi alkohol Q.

(d) Through oxidation process, alcohol Q is changed to butanoic acid.Explain a chemical test to differentiate between alkane,C4H10 and butanoic acid.In the description, you should include : apparatus and materials used, procedures andobservationsMelalui proses pengoksidaan, alcohol Q ditukarkan kepada asid butanoik.Terangkan satu ujian kimia untuk membezakan antara alkana, C4H10 dan asid butanoik. Di dalam penerangan, anda mesti menyatakan : susunan alat radas dan bahan, prosedur dan pemerhatian.

[10 markah]

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SKOR A KIMIA 2014TAJUK: SEBATIAN KARBONSET 5Table 5 shows the formulae of three organic compounds.Jadual 5 menunjukkan formula bagi tiga sebatian organik

Organic compoundSebatian organik

FormulaFormula

Butan-1-olButan-1-ol

C4H10O

Butanoic acidAsid Butanoik

C4H8O2

But-1-eneBut-1-ena

C4H8

TABLE / JADUAL 5

Use the information in Table 5 to answer the following questions.Gunakan maklumat dalam Jadual 5 untuk menjawab soalan berikut.

(a) Name the homologous series for butan-1-ol.Namakan siri homolog bagi butan-1-ol

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

(b) (i) Draw the structural formula of butan-1-olLukiskan formula struktur bagi butan-1-ol

[ 1 mark ]

(ii) The following structural formula is isomer of butanol.Formula struktur berikut ialah isomer bagi butanol

CH3

CH3 - C - CH3

OH

Name the isomer.Namakan isomer itu.

………………………………………………………………………......................................................1 mrk

(c ) Butan-1-ol can react with butanoic acid to form compound X and water.Butan-1-ol boleh bertindak balas dengan asid butanoik untuk menghasilkan sebatian X dan air.

(i) What is the name of this reaction?Apakah nama tindak balas ini.

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

(ii) Write the chemical equation for the reaction.Tuliskan persamaan kimia bagi tindak balas itu.

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

(iii) State one physical property of compound X.Nyatakan satu sifat fizik bagi sebatian X.

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

(d) Dehydration of butan-1-ol using porous pot chips produce but-1-ene.Draw the set up of apparatus used in the dehydration.Pengdehidratan butan-1-ol menggunakan serpihan pasu berliang menghasilkan but-1-ena. Lukiskan susunan radas yang digunakan dalam pengdehidratan itu.

2 mrk

SKOR A KIMIA 2014TAJUK: SEBATIAN KARBONSET 6(a) Diagram 10.1 shows the structural formulae of compound A and compound B.

Rajah 10.1 menunjukkan formula struktur bagi sebatian A dan sebatian B.

Compound A Compound BSebatian A Sebatian B

Diagram 10.1Rajah 10.1

Compound A and compound B are burnt completely in oxygen to produce carbon dioxide gas and water.Sebatian A dan sebatian B terbakar lengkap dalam oksigen menghasilkan gas karbon dioksida dan air.

(i) Name compound B.Namakan sebatian B.

………………………………………………………………………………………………………………………………..

(ii) Compound B produced more soot than compound A when burnt in oxygen.Explain why.Sebatian B menghasilkan lebih jelaga daripada sebatian A apabila terbakar dalam oksigen. Terangkan mengapa.[Relative molecular mass of: A = 86, B = 84]

[Jisim molekul relatif: A = 86, B = 84]……………………………………………………………………………………………………………………………………………………………………………………

.……………………………………………………………………………………………………………………………………………………………………………………

.4 mrk.(b) Diagram 10.2 shows the structural formulae of compound J and compound K.

Rajah 10.2 menunjukkan formula struktur bagi sebatian J dan sebatian K.

Compound J Compound KSebatian J Sebatian K

Diagram 10.2Rajah 10.2

State one physical property of compound K . Describe briefly a chemical test to differentiate between compound J and compound K.Nyatakan satu sifat fizik Sebatian K. Huraikan secara ringkas satu ujian kimia untuk membezakan antara sebatian J dan sebatian K.

[6 marks]

…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………(c) Alcohols undergo dehydration reaction to produce alkenes and water.

Describe how to prepare an alkene from a named alcohol through dehydration process. In your description, include the diagram of the apparatus set-up and balanced chemical equation for the reaction.Alkohol mengalami tindak balas pendehidratan untuk menghasilkan alkena dan air. Huraikan bagaimana satu alkena disediakan daripada alkohol yang dinamakan melalui proses pendehidratan. Dalam huraian anda, sertakan gambar rajah bagi susunan radas dan persamaan kimia seimbang bagi tindak balas itu.

[10 marks]

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