Page 67 - Hybrid PBD 2022 Tg 4 - Kimia

Kimia Tingkatan 4 Bab 7

(b) (i) Namakan bahan yang menutupi tanda ×.
Name the substance that covers the mark ×.
Sulfur / Sulphur

(ii) Tulis persamaan kimia bagi tindak balas.
Write the chemical equation for the reaction.

Na S O + H SO ➞ Na SO + H O + SO + S
2
3
2 2
2
2
4
4
2
1
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(c) Apakah ?
masa
1
What is time ?
1
masa ialah kadar tindak balas.
1
time is the rate of reaction.
Kesimpulan / Conclusion:
Semakin tinggi kepekatan bahan tindak balas, semakin tinggi kadar tindak balas.
The higher the concentration of reactant, the higher the rate of reaction.

C Suhu / Temperature

Tujuan: Mengkaji kesan suhu ke atas kadar tindak balas.
Aim: To study the effect of temperature on the rate of reaction.

Termometer
Thermometer

Kelalang kon
Conical flask Natrium tiosulfat, Na S O 3
2
2
Sodium thiosulphate, Na S O 3
2
2
Natrium tiosulfat, Na S O 2
2
2

Sodium thiosulphate, Na S O 2
2
2
Tanda ×
Mark ×
Panaskan
Kertas putih Heat
White paper
Keputusan / Result:
1 2 3 4 5
Experiment
Suhu larutan natrium tiosulfat (°C) 28.0 35.0 40.0 45.0 50.0
Temperature of sodium thiosulphate solution (°C)
Masa yang diambil (s)
Time taken (s) 33 24 19 16 14
1 (s ) / 1 –1
–1
masa time (s ) 0.030 0.042 0.053 0.063 0.071

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07 Bab 7.indd 174 10/29/21 5:18 PM