MODUL PRO-X KIMIA KSSM TINGKATAN 5 2022

(b) Maklumat berikut adalah mengenai suatu sebatian organik R. The following information is about an organic compound R. Karbon : 85.71 % Carbon Hidrogen : 14.29 % Hydrogen Jisim molekul relatif : 56 Relative molecular mass Berdasarkan maklumat di atas, Based on the above information, (i) Tentukan formula empirik dan formula molekul bagi sebatian R. Determine the empirical formula and molecular formula of the compound R. [5 markah] [5 marks] (ii) Nyatakan nama dan siri homolog bagi sebatian R. State the name and homologous series of compound R. [2 markah] [2 marks] (c) Jadual 1.2 menunjukkan sifat-sifat bagi dua sebatian organik. Setiap sebatian mempunyai lima atom karbon per molekul. Table 1.2 shows the properties of two organic compounds. Each compound has five carbon atoms per molecule. Sebatian Sifat Compound Properties  Tidak larut dalam air S Insoluble in water  Melunturkan warna perang air bromin Decolourised brown colour of bromine water  Larut dalam air Soluble in water T  Bertindak balas dengan kalsium karbonat menghasilkan gas yang menukarkan air kapur menjadi keruh. React with calcium carbonate to produce a type of gas that turns lime water cloudy. Jadual 1.2 Table 1.2 Berdasarkan Jadual 1.2, Based on Table 1.2, (i) Nyatakan nama dan kumpulan berfungsi bagi sebatian S dan T. State the name and functional group of the compound S and T. [4 markah] [4 marks] (ii) Lukis formula struktur bagi tiga isomer sebatian S. Draw structural formulae for three isomers of compound S. [3 markah] [3 marks] Modul KIMIA KSSM TINGKATAN 5 151

Bahagian C Section C 1 Rajah 1 menunjukkan bagaimana etanol dihasilkan daripada alkena W. Diagram 1 shows how ethanol is produced from alkene W. Alkena W + H2O Alkene W + H2O Asid fosforik, 300 °C, 60 atm Phosphoric acid, 300 °C, 60 atm Etanol Ethanol Serpihan porselin, dipanaskan Porcelain chips, heat Sebatian Q + H2O Compound Q + H2O Rajah 1 Diagram 1 (a)(i) Namakan alkena W dan nyatakan formula molekulnya. Tuliskan persamaan kimia apabila alkena W menjadi etanol. Name alkene W and state its molecular formula. Write the chemical equation when alkene W becomes ethanol. [4 markah] [4 marks] (ii) Nyatakan tiga sifat kimia etanol dan sebatian Q. State three chemical properties of ethanol and compound Q. [6 markah] [6 marks] (b) Tindak balas antara etanol dan asid karboksilik akan menghasilkan ester. Tindak balas ini dikenali sebagai pengesteran. Dengan menamakan satu asid karboksilik, terangkan satu eksperimen untuk menghasilkan ester yang berkaitan. Pada jawapan anda, nyatakan pemerhatian, formula struktur dan nama ester yang terhasil. Reaction of ethanol and carboxylic acid will produce an ester. The reaction is known as esterification. By naming a carboxylic acid, describe an experiment to produce corresponding ester. Include in your answer, the observation, structural formula and the name of ester formed. [10 markah] [10 marks] Modul KIMIA KSSM TINGKATAN 5 152

2 Rajah 2 menunjukkan carta alir bagi tindak balas-tindak balas yang dialami oleh sebatian X. Sebatian X mempunyai kurang dari empat atom karbon. Diagram 2 shows the flowchart for the reactions undergone by compound X. Compound X has less than four carbon atoms. Pembakaran Sebatian X Combustion Gas A + H2O Compound X Gas A + H2O Kepingan porselin panas Proses Y Pembakaran Hot porcelain chips Process Y Combustion Larutan kalium manganat + C3H7COOH Sebatian B (VIII) berasid Sebatian C Sebatian D Compound C Compound D Compound B Acidified potassium manganate(VII) solution Rajah 2 Diagram 2 Berdasarkan Rajah 2, Based on Diagram 2, (a) Cadangkan satu identiti bagi sebatian X. Nyatakan nama bagi proses Y. Kenal pasti gas A, dan sebatian-sebatian B, C dan D. Suggest an identity for compound X. State the name of process Y. Identify gas A and compounds B, C and D. [6 markah] [6 marks] (b) Tuliskan persamaan kimia bagi pembakaran sebatian X dalam gas oksigen berlebihan. Hitungkan isi padu gas A yang terbebas sekiranya 0.25 mol sebatian X telah dibakar. [Isi padu gas molar pada keadaan bilik = 24 dm3 mol-1] Write the chemical equation for the combustion of compound X in excess oxygen gas. Calculate the volume of gas A released if 0.25 mol of compound X was burned. [Molar volume of gas at room condition = 24 dm3 mol-1] [4 markah] [4 marks] (c) Sebatian C bertindak balas dengan C3H7COOH untuk membentuk sebatian D. Dengan menggunakan jawapan anda di 2(a), huraikan pembentukan sebatian D. Dalam huraian anda, sertakan : Compound C reacts with C3H7COOH to form compound D. By using your answer in 2(a), describe the formation of compound D. In your description, please include :  Prosedur Procedure  Pemerhatian-pemerhatian yang diperolehi Observations obtained  Persamaan kimia yang terlibat Chemical equation involved [10 markah] [10 marks] Modul KIMIA KSSM TINGKATAN 5 153

BOLEH DAPATKAN MODUL LENGKAP SEGERA: MODUL PRO-X KIMIA KSSM TINGKATAN 5 BERSERTA FREE BUKU SOALAN MODUL PRO-X KIMIA KSSM FORM 5 TERBITAN 2022 BERMINAT? LAYARI WEB INI… https://sites.google.com/view/ koleksibahankimiaspm Modul KIMIA KSSM TINGKATAN 5 154