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UJIAN MAC CHEMISTRY

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1.Table 1 shows the information for three sets of experiment to investigate factors affecting the rate of
reaction between calcium carbonate and hydrochloric acid.
Jadual 1 menunjukkan maklumat bagi tiga set eksperimen untuk menyiasat faktor-faktor yang
mempengaruhi kadar tindak balas antara kalsium karbonat dengan asid hidroklorik.
Experiment
Reactants
Eksperimen
Bahan tindak balas
Excess calcium
Carbonate powder
Time taken to collect 40
cm3 of carbon dioxide
gas (s)
Masa yang diambil
untuk mengumpul 40
cm3 gas karbon
dioksida (s)
50 cm3 of 1.0 mol dm-3
hydrochloric acid
Set I
33
Serbuk kalsium
karbonat berlebihan
Excess calcium
carbonate chip
50 cm3 asid hidroklorik
1.0 mol dm-3
50 cm3 of 1.0 mol dm-3
hydrochloric acid
Set II
45
Ketulan kalsium
karbonat berlebihan
Excess calcium
carbonate powder
50 cm3 asid hidroklorik
1.0 mol dm-3
25 cm3 of 2.0 mol dm-3
hydrochloric acid
Set III
25
Serbuk kalsium
karbonat berlebihan
25 cm3 asid hidroklorik
2.0 mol dm-3
Table 1
Jadual 1
(i)Write the chemical equation for the reaction between calcium carbonate
cid
Tuliskan persamaan kimia bagi tindak balas antara kalsium karbonat KLKLLLL;L;L;]=1.Table 1 shows
the information for three sets of experiment to investigate factors affecting the rate of reaction between
calcium carbonate and hydrochloric acid.
Jadual 1 menunjukkan maklumat bagi tiga set eksperimen untuk menyiasat faktor-faktor yang
mempengaruhi kadar tindak balas antara kalsium karbonat dengan asid hidroklorik.
Experiment
Reactants
Eksperimen
Bahan tindak balas
Excess calcium
Carbonate powder
Time taken to collect 40
cm3 of carbon dioxide
gas (s)
Masa yang diambil
untuk mengumpul 40
cm3 gas karbon
dioksida (s)
50 cm3 of 1.0 mol dm-3
hydrochloric acid
Set I
33
Serbuk kalsium
karbonat berlebihan
Excess calcium
carbonate chip
50 cm3 asid hidroklorik
1.0 mol dm-3
50 cm3 of 1.0 mol dm-3
hydrochloric acid
Set II
45
Ketulan kalsium
karbonat berlebihan
Excess calcium
carbonate powder
50 cm3 asid hidroklorik
1.0 mol dm-3
25 cm3 of 2.0 mol dm-3
hydrochloric acid
Set III
25
Serbuk kalsium
karbonat berlebihan
25 cm3 asid hidroklorik
2.0 mol dm-3
Table 1
Jadual 1
(i)Write the chemical equation for the reaction between calcium carbonate and hydrochloric
acid
Tuliskan persamaan kimia bagi tindak balas antara kalsium karbonat dengan asid
hidroklorik.rer23engan asid hidroklorik.
[5 marks]
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