Page 77 - Hybrid PBD 2022 Tg 4 - Kimia

Kimia Tingkatan 4 Bab 7
(ii) Bilangan mol bagi asid sulfurik dalam larutan itu.
The number of moles of sulphuric acid in the solution.
1.0 × 5 = 0.005 mol
1000
[1 markah / 1 mark]
(c) Berdasarkan jawapan di 1(b)(i) dan 1(b)(ii), namakan bahan tindak balas yang menentukan kuantiti sulfur
yang terbentuk pada akhir tindak balas itu.
Based on the answers in 1(b)(i) and 1(b)(ii), name the reactant which determines the quantity of sulphur formed at the end of the
reaction.
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Asid sulfurik / Sulphuric acid
[1 markah / 1 mark]

(d) (i) Nyatakan satu faktor yang boleh mempengaruhi kadar tindak balas tersebut.
State one factor that can affect the rate of reaction.
Kepekatan // Suhu / Concentration // Temperature
[1 markah / 1 mark]

(ii) Dengan menggunakan teori perlanggaran, jelaskan bagaimana faktor di 1(d)(i) meningkatkan
kadar tindak balas.
By using the collision theory, explain how the factor in 1(d)(i) increases the rate of reaction.
Apabila kepekatan larutan tinggi, bilangan zarah per unit isi padu bertambah. Frekuensi perlanggaran

antara zarah-zarah bertambah. Frekuensi perlanggaran berkesan antara zarah-zarah bertambah.
Maka, kadar tindak balas meningkat. // Apabila suhu meningkat, tenaga kinetik zarah-zarah meningkat.

Lebih banyak zarah bertenaga untuk mengatasi tenaga pengaktifan. Frekuensi perlanggaran antara
zarah-zarah meningkat. Frekuensi perlanggaran berkesan meningkat. Maka, kadar tindak balas

meningkat.
When the concentration of solution is higher, the number of particles per unit volume increases. Frequency of collisions between

particles increases. Frequency of effective collisions increases. Thus, the rate of reaction increases. // When the temperature

increases, the kinetic energy of particles increases. More particles have energy to overcome the activation energy. Frequency of
collisions between particles increases. Frequency of effective collisions increases. Thus, the rate of reaction increases.
[4 markah / 4 marks]

Bahagian B

2. (a) Puan Lina memotong kentang kepada beberapa bahagian seperti
yang ditunjukkan dalam Rajah 1 sebelum menggorengnya.
Mrs. Lina cut the potatoes into few pieces as shown in Diagram 1 before frying it.
Nyatakan faktor yang terlibat dalam tindakan Puan Lina tersebut.
Terangkan bagaimana faktor tersebut mempengaruhi kadar tindak
balas.
State the factor that involves in Mrs. Lina action. Explain how the factor affects the rate of
reaction. Rajah 1 / Diagram 1
[4 markah / 4 marks]

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07 Bab 7.indd 184 10/29/21 5:19 PM