Page 60 - Hybrid PBD 2022 Tg 4 - Kimia

Kimia Tingkatan 4 Bab 7
4. Jalankan aktiviti berikut dan jawab semua soalan. SP 7.1.3 TP4 KBAT Menganalisis
Carry out the following activity and answer all questions.

AKTIVITI

Tindak balas Zink, Zn dengan asid Asid nitrik, HNO Larutan kalium
Reaction sulfurik, H SO dengan ketulan 3 iodida, KI dan larutan
2
4
Zinc, Zn and sulphuric acid, H SO marmar, CaCO plumbum(II) nitrat,
2 4 3
Nitric acid, HNO and marble Pb(NO )
3
Gas hidrogen, H 2 chips, CaCO 3 2
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Hydrogen gas, H 2 3 Potassium iodide solution, KI
and lead(II) nitrate solution,
Asid sulfurik,H SO 4 Ketulan Asid nitrik,
2
marmar, HNO 3 3 2
Sulphuric acid, H 2 SO 4 Pb(NO )
CaCO 3 Nitric acid, HNO 3
Marble chips, Air suling
Distilled water
CaCO 3
Air Kalium Plumbum(II)
Water ON iodida, KI nitrat, Pb(NO ) 3 2
Zink, Zn OFF g Potassium Lead(II) nitrate,
Zinc, Zn iodide, KI Pb(NO 3 ) 2
(a) Perubahan Isi padu gas hidrogen Jisim ketulan marmar Jisim plumbum iodida
yang diukur Volume of hydrogen gas Mass of marble chips Mass of lead(II) iodide
Measurable
change
(b) Persamaan Zn(p) + H SO (ak) ➞ CaCO (p) + 2HNO (ak) ➞ Pb(NO ) (ak) + 2KI(ak) ➞
3 2
2
4
3
3
kimia ZnSO (ak) + H (g) Ca(NO ) (ak) + H O(ce) + PbI (p) + 2KNO (ak)
2
4
Chemical equation Zn(s) + H SO (aq) ➞ ZnSO (aq) + 2 3 2 2 Pb(NO ) (aq) + 2KI(aq) ➞ 3
2 4 4 CO (g) 3 2
2
H (g) PbI (s) + 2KNO (aq)
2 CaCO (s) + 2HNO (aq) ➞ 2 3
3
3
Ca(NO ) (aq) + H O(l) + CO (g)
3 2 2 2
(c) Bagaimanakah • Pembuakan berhenti • Pembuakan berhenti Tiada pembentukan
tindak balas Effervescence is stopped Effervescence is stopped mendakan lagi
lengkap • Tiada lagi gelembung gas • Tiada lagi gelembung No more precipitate formation
ditentukan? terbebas gas terbebas
How to determine No more gas bubbles is released No more gas bubbles is
a reaction is released
complete? • Jisim ketulan marmar
tidak berubah.
Mass of marble chips does
not change
5. (a) Berikan maksud kadar tindak balas purata. SP 7.1.4 TP1
Give the meaning of average rate of reaction.
Nilai purata bagi kadar tindak balas yang berlaku dalam satu tempoh masa tertentu.

The average value for the rate of reaction that occurs in a particular time interval.

(b) Berikan maksud kadar tindak balas pada masa tertentu.
Give the meaning of instantaneous rate of reaction.
Kadar tindak balas yang berlaku pada satu ketika sahaja.

The rate of reaction at a particular point of time.

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07 Bab 7.indd 167 10/29/21 5:18 PM