Page 73 - Hybrid PBD 2022 Tg 4 - Kimia

Kimia Tingkatan 4 Bab 7
(b) Nyatakan sebab mengapa zarah bahan tindak balas perlu mencapai tenaga pengaktifan.
State the reason why reactant particles need to achieve the activation energy.
Untuk memutuskan ikatan dalam zarah bahan tindak balas dan membentuk ikatan baharu dalam hasil

tindak balas.

To break the bonds in the reactant particles and form new bonds in the product.

5. Tandakan (3) pada kesan yang berkaitan kadar tindak balas. SP 7.4.3 TP2
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Tick (3) the effects that are related to the rate of reaction.
Kesan Kepekatan Tekanan Saiz Suhu Mangkin
Effect Concentration Pressure Reactant size Temperature Catalyst
(a) Bilangan zarah per unit isi padu
bertambah 3 3
Number of particles per unit volume
increases
(b) Jumlah luas permukaan
terdedah kepada perlanggaran
bertambah 3
Total surface area exposed to collision
increases

(c) Menyediakan lintasan alternatif
dengan merendahkan tenaga
pengaktifan 3
Provides an alternative pathway by
lowering the activation energy
(d) Tenaga kinetik zarah
bertambah 3
Kinetic energy of particles increases
(e) Lebih banyak zarah bertenaga
untuk mengatasi tenaga
pengaktifan 3
More particles have energy to overcome
the activation energy
(f) Lebih banyak zarah dapat
mencapai tenaga pengaktifan 3
More particles can achieve the
activation energy

(g) Frekuensi perlanggaran
bertambah 3 3 3 3
Frequency of collisions increases
(h) Frekuensi perlanggaran
berkesan bertambah 3 3 3 3 3
Frequency of effective collisions

(i) Kadar tindak balas bertambah 3 3 3 3 3
Rate of reaction increases

© Penerbitan Pelangi Sdn. Bhd. 180

07 Bab 7.indd 180 10/29/21 5:19 PM