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A student used the apparatus shown in Figure 10 to investigate the reaction between marble chips and dilute hydrochloric acid - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2023 - Paper 2
Question 5
A student used the apparatus shown in Figure 10 to investigate the reaction between marble chips and dilute hydrochloric acid. The student recorded the volume of ga... show full transcript
Worked Solution & Example Answer:A student used the apparatus shown in Figure 10 to investigate the reaction between marble chips and dilute hydrochloric acid - Edexcel - GCSE Chemistry Combined Science - Question 5 - 2023 - Paper 2
Step 1
Plot the results shown in Figure 11.
Answer
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Begin by marking the axis on the grid. The horizontal axis represents 'time in minutes' ranging from 0 to 6, while the vertical axis represents 'volume of gas in cm³' ranging from 0 to 100.
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Plot each data point from the table onto the graph:
- At 0 minutes, volume of gas = 0 cm³
- At 1 minute, volume of gas = 52 cm³
- At 2 minutes, volume of gas = 78 cm³
- At 3 minutes, volume of gas = 91 cm³
- At 4 minutes, volume of gas = 97 cm³
- At 5 minutes, volume of gas = 100 cm³
- At 6 minutes, volume of gas = 100 cm³
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Once all points are plotted, draw a smooth curve that best fits the points. Ensure the curve reflects the trend of the data, showing an increase in volume over time and leveling off towards the maximum volume.