SPM Chemistry 2017 (Q9)

Question

9 (a)     The graph in Diagram 7.1 shows the curves of experiment I and experiment II that was carried out to study the rate of reaction.

Graf di Rajah 7.1 menunjukkan lengkung bagi eksperimen I dan eksperimen II yang dijalankan bagi mengkaji kadar tindak balas.

 

Based on the graph in Diafram 7.1,

Bedasarkan kepada graf di Rajah 7.1,

 

(i) Calculate average rate of reaction for Experiment I and Experiment II.

Hitung kadar tindak balas purata bagi Eksperimen I dan Eksperimen II.

 

(ii) Curve in Experiment I is obtained from the reaction between 5 g granulated calcium carbonate and 50cm^3 of 1.0 mol dm^-3 hydrochloric acid. The experiment is repeated to obtain the curve in Experiment II. Other than temperature, suggest one factor that can change the curve in Experiment I to the curve in Experiment II.

Based on the suggested factor, describe one experiment to show how you manipulate the factor in order to obtain the curve in Experiment II.

In your description include a labelled diagram.

Lengkung dalam Ekperimen I diperoleh daripada tindak balas antara 5 g ketulan kalsium karbonat dan 50 cm^3 asid hidroklorik 1.0 mol dm^-3. Eksperimen itu diulangi untuk mendapatkan lengkung bagi Eksperimen II. Selain daripada suhu, cadangkan satu factor yang boleh mengubah lengkung Eksperimen I kepada lengkung Eksperimen II. Berdasarkan Faktor yang dicadangkan, huraikan satu eksperimen untuk menunjukkan bagaimana anda memanipulasi factor tersebut bagi mendapatkan lengkung Eksperimen II. Dalam huraian anda, sertakan gambar rajah berlabel.

 

(b)       Chemical equation below shows the reaction between hydrogen gas and chlorine gas to produce hydrogen chloride gas.

Persamaan kimia di bawah menunjukkan tindak balas antara gas hydrogen dan gas klorin untuk menghasilkan gas hydrogen klorida.

 

Set 1 and Set II in Diagram 7.2 show the rate of formation of hydrogen chloride gas at different temperatures.

Set I dan Set II dalam Rajah 7.2 menunjukkan kadar pembentukan gas hydrogen klorida pada suhu yang berlainan.

 

Based on Diagram 7.2,

Berdasarkan Rajah 7.2,

(i) If the two sets of reaction occur at temperature 30^oC, and 40^oC, determine the temperature of X^oC in Set I and Y^oC in Set II.

Jika dua set tindak balas itu berlaku pada suhu 30^oC dan 40^oC, tentukan suhu X^oC bagi Set I dan Y^oC bagi Set II.

 

(ii) With reference to collision theory. Explain why there is a difference in the rate of formation of hydrogen chloride in Set I and Set II.

Merujuk kepada teori perlanggaran, terangkan mengapa terdapat perbezaan dalam kadar pembentukan gas hydrogen kloride dalam Set I dan Set II.

Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

 

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