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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 on the grid
Answer
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Begin by marking the x-axis (time in minutes) and the y-axis (volume of gas in cm³) on the provided grid.
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Plot each coordinate point based on the data provided:
- (0, 0)
- (1, 52)
- (2, 78)
- (3, 91)
- (4, 97)
- (5, 100)
- (6, 100)
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Ensure to accurately represent each point according to the measurements.
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For clarity, label each point if necessary.
Step 2
Draw a curve of best fit
Answer
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Based on the plotted points, draw a smooth curve that best represents the data.
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The curve should connect the points in a visually appealing manner, showing the general trend of the reaction.
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Ensure that the curve reflects an appropriate relationship, demonstrating that the volume of gas increases with time before plateauing.