Page 34 - Hybrid PBD 2022 Tg 5 - Kimia

Kimia Tingkatan 5 Bab 3

PBD
Jenis Haba Tindak Balas
PBD
PBD 3.2 Haba Tindak Balas Konsep Visual
Heat of Reaction Types of Heat of Reaction Buku Teks ms. 120 – 135
1. Jalankan aktiviti di bawah tentang haba pemendakan. SP 3.2.1 TP4 KBAT Menganalisis
Carry out the activity below about the heat of precipitation.

AKTIVITI
Tujuan / Aim :
Untuk menentukan haba pemendakan bagi argentum klorida dan magnesium karbonat.
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To determine the heat of precipitation of silver chloride and magnesium carbonate.
Bahan / Materials :
–3
–3
Larutan argentum nitrat 0.5 mol dm , larutan natrium klorida 0.5 mol dm , larutan magnesium nitrat
0.5 mol dm , dan larutan natrium karbonat 0.5 mol dm .
–3
–3
–3
–3
–3
0.5 mol dm of silver nitrate solution, 0.5 mol dm of sodium chloride solution, 0.5 mol dm of magnesium nitrate solution, and
0.5 mol dm of sodium carbonate solution.
–3
Operasi definisi haba pemendakan / Operational definition of heat of precipitation :
Apabila dua larutan akueus dicampurkan untuk menghasilkan 1 mol mendakan, bacaan termometer
meningkat atau menurun. / When two aqueous solutions are added to produce 1 mole of precipitate, the thermometer
reading increases or decreases.
Prosedur / Procedure:
1. Tuang 25 cm larutan argentum nitrat ke dalam cawan polistirena.
3
3
Pour 25 cm of silver nitrate solution into a polystyrene cup.
2. Rekodkan suhu awal, t 1 °C. / Record the initial temperature, t 1 °C.
3. Tuang 25 cm larutan natrium klorida ke dalam cawan polistirena lain.
3
3
Pour 25 cm of sodium chloride solution into another polystyrene cup.
4. Rekodkan suhu awal, t 2 °C. / Record the initial temperature, t 2 °C.
5. Tuang larutan natrium klorida ke dalam larutan argentum nitrat dengan segera. Kacau campuran
dan rekodkan suhu tertinggi, t 3 °C.
Pour the sodium chloride solution into silver nitrate solution quickly. Stir the mixture and record the highest temperature,
t 3 °C.
6. Ulang langkah 1 hingga 5 dengan larutan magnesium nitrat dan larutan natrium karbonat.
Repeat steps 1 to 5 with magnesium nitrate solution and sodium carbonate solution.
Keputusan/ Result :
Bahan Suhu awal (°C) Suhu tertinggi (°C) Perubahan suhu (°C)
Substance Initial temperature (°C) Highest temperature (°C) Temperature change (°C)
(a) Argentum nitrat 30.0
Silver nitrate 33.8 +3.8
Natrium klorida 30.0
Sodium chloride
(b) Magnesium nitrat 30.0
Magnesium nitrate 20.0 −10.0
Natrium karbonat 30.0
Sodium carbonate
Soalan / Questions :
1. Tentukan definisi secara operasi bagi haba pemendakan. Haba Pemendakan
Determine the operational definition for the heat of precipitation. Heat of Precipitation
INFO
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03 Hybrid Kimia Tg5.indd 105 05/11/2021 4:18 PM