Page 65 - Hybrid PBD 2022 Tg 4 - Kimia

Kimia Tingkatan 4 Bab 7

(b) Tulis persamaan kimia bagi tindak balas.
Write the chemical equation for the reaction.
CaCO + 2HCl ➞ CaCl + H O + CO 2
3
2
2
(c) Lengkapkan pernyataan di bawah.
Complete the statements below.
(i) Kadar tindak balas purata bagi lengkung Set II lebih tinggi daripada lengkung Set I.
The average rate of reaction for Set II curve is higher than Set I curve.
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(ii) Kecerunan pada 1 minit untuk lengkung Set II lebih besar . Kadar tindak balas pada 1 minit
untuk lengkung Set II lebih tinggi daripada lengkung Set I.
The gradient at 1 minute for Set II curve is bigger . The rate of reaction for Set II curve is higher than Set I curve.

(d) (i) Nyatakan hubungan antara saiz bahan tindak balas dengan jumlah luas permukaan bahan tindak
balas.
State the relationship between size of reactant with the total surface area of the reactant.
Semakin kecil saiz bahan tindak balas, semakin besar jumlah luas permukaan bahan yang terdedah

untuk tindak balas kimia berlaku.

The smaller the size of reactant, the bigger the total surface area exposed for the chemical reaction to happen.

(ii) Nyatakan hubungan antara jumlah luas permukaan bahan tindak balas dengan kadar tindak balas.
State the relationship between total surface area of the reactant with rate of reaction.

Semakin besar jumlah luas permukaan bahan tindak balas, semakin tinggi kadar tindak balas.

The bigger the total surface area of the reactant, the higher the rate of reaction.
Kesimpulan / Conclusion:

Semakin kecil saiz bahan tindak balas, semakin tinggi kadar tindak balas.

The smaller the size of reactant, the higher the rate of reaction.

B Kepekatan / Concentration

Tujuan: Mengkaji kesan kepekatan bahan tindak balas ke atas kadar tindak balas.
Aim: To study the effect of concentration of reactants on the rate of reaction.

Tanda X Natrium tiosulfat, Na S O
Mark X 2 2 3
+ asid sulfurik, H SO 4
2
Sodium thiosulphate, Na S O
2
2
3
+ sulphuric acid, H SO 4
2
Kertas putih
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07 Bab 7.indd 172 10/29/21 5:18 PM