7.1.3 Reactant/Product-Time Graph

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Question 1 of 8

1. Question
1 point(s)
CHEM1003010

The graph shows the volume of gas released in a reaction against time. Which of the following statement is not true about the reaction?
- The rate of reaction at t₂ is higher than at t₃.
- The reaction completely stop at t₄.
- The rate of reaction increases over time.
- The volume of the gas collected in the end of the reaction is V₄.
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Question 2 of 8

2. Question
1 point(s)
The graph above shows the result obtained from an experiment to investigate the rate of the reaction between a piece of seashell and hydrochloric acid. Which of the following statements are true about the experiment.
- I. The reaction rate at 100s is higher than that at 50s.
- II. 8cm³ of carbon dioxide gas is released in 100s.
- III. The reaction stop at 200s.
- IV. The average rate of reaction in 200s is 0.06cm³sˉ¹.
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Question 3 of 8

3. Question
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The graph below shows the volume of oxygen gas released over time in a chemical reaction. Why the volume of the oxygen remains unchanged after 5 minutes?
- The pressure of oxygen gas become too low after 5 minute.
- The oxygen released has dissolved in water.
- The rate of reaction become very low after 5 minute.
- One of the reactants of this reaction has finish.
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Question 4 of 8

4. Question
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Which of the following graph will be obtained when zinc powder is added into excess dilute hydrochloric acid?
- I.
- II.
- III.
- IV
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Question 5 of 8

5. Question
1 point(s)
The graph above shows the mass decreases of a piece of calcium carbonate over time in a reaction. Which of the following statements are true about this reaction?
- I. Calcium carbonate is in excess
- II. the rate of the reaction decreases over time
- III. The rate of reaction at t is equal to 0.
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Question 6 of 8

6. Question
1 point(s)
The diagram above shows the set-up of the apparatus used to investigate the decomposition rate of hydrogen peroxide. Which of the following is the graph obtained when the reading of the compression balance is plotted against time?
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Question 7 of 8

7. Question
1 point(s)
The graph shows the volume of carbon dioxide produced against time in a chemical reaction. Find the rate of reaction at 3 minutes.
- 8.25 cm³/min
- 3.50 cm³/min
- 4.85cm³/min
- 12.05 cm³/min
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Question 8 of 8

8. Question
1 point(s)
The figure shows the graph of the volume of hydrogen gas released against time for the reaction between granulated zinc and hydrochloric acid. The amount of zinc used is in excess. Graph M is obtained when 25 cm³ hydrochloric acid of concentration 1 mol/dm³. is used. Which of the following must be done to produce curve N?
- Cool the hydrochloric acid.
- Replace granulated zinc with zinc powder.
- Add more hydrochloric acid to the solution.
- Use sulphuric acid of same concentration instead of hydrochloric acid.
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