Page 78 - Hybrid PBD 2022 Tg 4 - Kimia

Kimia Tingkatan 4 Bab 7
(b) Tiga set eksperimen, Set I, Set II, dan Set III dijalankan untuk mengkaji faktor-faktor yang mempengaruhi
kadar tindak balas. Masa yang diambil untuk mengumpul 50 cm gas bagi setiap set eksperimen
3
ditunjukkan dalam Jadual 1.
Three sets of experiment, Set I, Set II and Set III are carried out to investigate the factors that affect the rate of reaction. The reactants
and time taken to collect 50 cm of gas for each set of experiment is recorded in Table 1.
3
Masa yang diambil untuk
Set Bahan tindak balas 3
Set Reactants mengumpul 50 cm gas (s)
Time taken to collect 50 cm of gas (s)
3
5 g serbuk CaCO 50 cm asid nitrik 1.0 mol dm –3
3
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I 3 40
5 g of CaCO powder 50 cm of 1.0 mol dm nitric acid
3
–3
3
5 g ketulan CaCO 50 cm asid nitrik 1.0 mol dm –3
3
II 3 50
5 g of CaCO chips 50 cm of 1.0 mol dm nitric acid
3
–3
3
5 g serbuk CaCO 25 cm asid nitrik 2.0 mol dm –3
3
III 3 30
5 g of CaCO powder 25 cm of 2.0 mol dm nitric acid
–3
3
3
Jadual 1 / Table 1
(i) Tulis persamaan kimia seimbang bagi tindak balas antara kalsium karbonat dan asid nitrik.
Hitung isi padu maksimum gas karbon dioksida yang terbebas dalam Set I.
3
–1
[Isi padu molar gas pada keadaan bilik = 24 dm mol ]
Write the balanced chemical equation for the reaction between calcium carbonate and nitric acid.
Calculate the maximum volume of carbon dioxide gas released in Set I.
–1
[Molar volume of gas at room condition = 24 dm mol ]
3
[5 markah / 5 mark]
(ii) Lakarkan graf bagi isi padu gas melawan masa bagi Set I, Set II dan Set III pada paksi yang sama.
Sketch the graph of volume of gas against time for Set I, Set II and Set III on the same axes.
[5 markah / 5 mark]
(iii) Berdasarkan Jadual 1,
Based on Table 1,
• susun kadar tindak balas bagi Set I, Set II, dan Set III dalam tertib menaik.
arrange the rate of reaction for Set I, Set II and Set III in ascending order.
• nyatakan dan terangkan faktor bagi perbezaan kadar tindak balas antara Set I dengan Set II
berdasarkan teori perlanggaran.
state and explain the factor for the difference of rate of reaction between Set I and Set II based on the collision theory
[6 markah / 6 marks]
Bahagian C

3. (a) Rajah 2 menunjukkan dua botol susu, A dan B. Botol A disimpan di dalam peti sejuk pada suhu 3 °C,
manakala Botol B diletakkan di luar pada suhu 30 °C.
Diagram 2 shows two bottles of milk, A and B. Bottle A is stored in the refrigerator at 3 °C, whereas Bottle B is put outside at 30 °C.

Botol A Botol B
Bottle A Bottle B
Rajah 2 / Diagram 2

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07 Bab 7.indd 185 10/29/21 5:19 PM