Page 13 - PBD Plus Kimia T4 (EG)

Kimia Tingkatan 4 Bab 2

Pemanasan naftalena Penyejukan naftalena
Heating of naphtalene Cooling of naphtalene

Masa (min) Suhu (°C) Keadaan Masa (min) Suhu (°C) Keadaan
Time (min) Temperature (°C) State Time (min) Temperature (°C) State

4.0 80.0 Pepejal dan cecair 4.0 80.0 Pepejal dan cecair
Solid and liquid Solid and liquid

4.5 80.0 Pepejal dan cecair 4.5 80.0 Pepejal dan cecair
Solid and liquid Solid and liquid

5.0 80.0 Pepejal dan cecair 5.0 80.0 Pepejal dan cecair
Solid and liquid Solid and liquid

5.5 80.0 Pepejal dan cecair 5.5 76.0 Pepejal dan cecair
Solid and liquid Solid and liquid

6.0 80.0 Pepejal dan cecair 6.0 73.0 Pepejal dan cecair
Solid and liquid Solid and liquid

6.5 83.0 Cecair / Liquid 6.5 69.0 Pepejal / Solid

7.0 86.0 Cecair / Liquid 7.0 66.0 Pepejal / Solid

89.0
64.0
7.5
7.5 Penerbitan Pelangi Sdn Bhd Pepejal / Solid
Cecair / Liquid
Perbincangan / Discussion:
(a) Plotkan graf suhu melawan masa bagi pemanasan dan penyejukan naftalena.
Plot a graph of temperature against time for the heating and cooling of naphtalene.
(i) Graf pemanasan naftalena
Graph for heating of naphtalene
Suhu (°C)
Temperature (°C)

90.0 D
Takat lebur = 80 °C
Melting point = 80°C
80.0
B C

70.0

60.0 A

50.0 Masa (minit)
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 Time (min)

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