Page 9 - Modul A+1 Kimia Tingkatan 4

7. Tabung didih dikeluarkan daripada kukus air. Permukaan luar tabung didih dikeringkan dan diletakkan ke
dalam kelalang kon seperti ditunjukkan Rajah 2.4.
The boiling tube is removed from the water bath. The outer surface of the boiling tube is dried and placed into a
conical flask as shown in Diagram 2.4.
8. Naftalena, C H dikacau secara berterusan.
8
10
The naphthalene, C H is stirred continuously.
10 8
9. Suhu dan keadaan jirim naftalena, C H direkodkan pada selang masa 30 saat sehingga suhu menurun ke
10 8
60 °C.
Temperature and the state of matter of naphthalene, C H are recorded at 30 seconds intervals until the temperature
10 8
decreases to 60 °C. BAB 2
10. Pemerhatian direkodkan.
The observations are recorded.
Keputusan/ Results: TP 3
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Jadual/Table 2.2 Pemanasan naftalena, C H / Heating of naphthalene, C H
10 8 10 8
Masa/Time (min) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Suhu/Temperature (°C) 60 67 74 80 80 80 85 90
Pepejal Pepejal Pepejal
Keadaan naftalena Pepejal Pepejal Pepejal Solid Solid Solid Cecair Cecair
State of naphthalene Solid Solid Solid + Cecair + Cecair + Cecair Liquid Liquid
Liquid Liquid Liquid
Jadual/Table 2.3 Penyejukan naftalena, C H / Cooling of naphthalene, C H
10 8 10 8
Masa/Time (min) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

Suhu/Temperature (°C) 90 85 80 80 80 74 67 60
Pepejal Pepejal Pepejal
Keadaan naftalena Cecair Cecair Solid Solid Solid Pepejal Pepejal Pepejal
State of naphthalene Liquid Liquid + Cecair + Cecair + Cecair Solid Solid Solid
Liquid Liquid Liquid

Mentafsir data/ Interpreting data: TP 4
1. Plotkan graf suhu melawan masa bagi pemanasan naftalena, C H .
8
10
Plot a graph of temperature against time for the heating of naphthalene, C H .
10 8
2. Plotkan graf suhu melawan masa bagi penyejukan naftalena, C H .
10
8
Plot a graph of temperature against time for the cooling of naphthalene, C H .
10 8
Graf suhu melawan masa bagi pemanasan naftalena, C H
10 8
Graph of temperature against time for the heating of naphthalene, C H
10 8
Suhu (°C)
Temperature (°C)
100

95

90

85

Takat lebur 80
Melting point
75

70

65

60 Masa (min)
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Time (min)

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