Page 180 - MODUL KIMIA A+XPLOSIVE SPM (LATEST)

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SPM Chemistry A xplosive Module (Chemistry A Ticket For “U”) ANSWERS

(ii) Set I and set III / Set I dan set III
Rate of reaction for set III / Kadar tindak balas untuk set III
= 50/30
3 -1
= 1.67 cm s
P1 - Calculation for overall rate of reaction for set III
Penghitungan untuk kadar tindak balas keseluruhan set III.

In set III / Dalam set III,
P2 - Rate of reaction is higher.
Kadar tindak balas lebih tinggi.
P3 - Temperature of HCl is higher.
Suhu HCl lebih tinggi.
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P4 - Kinetic energy of H ions are higher.
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Tenaga kinetic ion H lebih tinggi.
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P5 - Frequency of collisions between H ion and Zn are higher.
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Frekuensi perlanggaran di antara ion H dan Zn lebih tinggi.
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P6 - Frequency of effective collisions between H ion and Zn are
higher.
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Frekuensi perlanggaran berkesan di antara ion H dan Zn
lebih tinggi. 6

-3
-3
(c) P1 - Material: 0.5 mol dm hydrochloric acid, zinc, 0.5 mol dm
copper(II) sulphate solution and water.
-3
-3
Bahan: Asid hidroklorik 0.5 mol dm , zink, 0.5 mol dm
larutan kuprum (II) sulfat dan air.
P2 - Apparatus: Burette, water tough, conical flask, measuring
Cylinder, stopper with delivery tube, electronic balance,
stopwatch, retort stand and clamp.
Radas: Buret, basin, kelalang kon, silinder penyukat, penyumbat
dengan tiub penghantaran, baki elektronik, jam randik, kaki
retort dan pengapit.

Procedure / Prosedur
P3 - Fill a water tough with water until half full, a burette with water
until full and invert it into the water tough filled with water.
Isi sebuah basin dengan air sehingga separuh penuh, buret diisi
penuh dengan air dan telangkupkan buret ke dalam basin yang
berisi air.
P4 - Clamp the burette vertically to a retort stand then record the
initial burette reading.
Apitkan buret secara menegak kepada kaki retort dan catatkan
bacaan awal buret.

Sektor Pembelajaran, Jabatan Pendidikan Negeri Sabah | 2020 179