Page 128 - MODUL KIMIA A+XPLOSIVE SPM (LATEST)

SPM Chemistry A xplosive Module (Chemistry A Ticket For “U” ) GREEN ZONE [GZ]
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What is the heat of displacement for the reaction?
C ; Density of water = 1.0 g cm ]
[Specific heat of capacity of water = 4.2 J g -1 o -1 -3
Berapakah haba penyesaran bagi tindak balas ini?
[Muatan haba tentu air = 4.2 J g -1 o -1 -3
C ; Ketumpatan air = 1.0 g cm ]

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A -226.8 kJ mol C -470.4 kJ mol -1

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B -243.6 kJ mol D -5670.0 kJ mol

44 Bazli‟s leg was injured during loosening the soil in his farm. Bazli asked his son to
take substance X from the store and mix it into a plastic bag containing water. His
son shook the plastic bag and pressed it onto the injured part.
What is substance X?

Kaki Bazli terseliuh ketika sedang menggembur tanah kebunnya. Bazli meminta
anaknya untuk mengambil bahan X dari stor dan mencampurkannya ke dalam beg
plastik yang mengandungi air. Anaknya menggoncangkan beg plastik itu dan
menekap ke atas bahagian yang terseliuh.
Apakah bahan X?

A Ammonium nitrate C Calcium oxide
Ammonium nitrat Kalsium oksida

B Calcium chloride D Formic acid
Kalsium klorida Asid formik

3
-3
45 In an experiment, 2.4 g of magnesium powder is added to 100 cm of 2.0 mol cm
o
copper(II) sulphate solution.The temperature of the mixture increases by 1.0 C.
What is the heat of the reaction in the experiment?
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[Specific heat capacity of solution is 4.2 J g C ; Relative atomic mass of Mg=24 ]
3
Dalam satu eksperimen, 2.4 g serbuk magnesium ditambahkan kepada 100 cm
-3
o
larutan kuprum(II) sulfat 2.0 mol dm .Suhu campran meningkat sebanyak 1.0 C.
Berapakah haba tindak balas dalam eksperimen itu?
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[Muatan haba tentu larutan ialah 4.2 J g C ; Jisim atom relatif Mg = 24 ]

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A - 0.42 kJ mol C - 4.20 kJ mol -1

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B - 0.48 kJ mol D - 4.80 kJ mol

Sektor Pembelajaran, Jabatan Pendidikan Negeri Sabah | 2020 127