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 gas every minute as shown in Figure 11. time in minutes 0 1 2 3 4 5 6 volume of gas in cm³ 0 52 78 91 97 100 100 (a) On the grid, plot the results shown in Figure 11. Draw a curve of best fit.

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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

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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

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Answer

To plot the results, take the values of time in minutes against the respective volumes of gas produced in cm³.

Start by marking the x-axis for the time (0 to 6 minutes) and the y-axis for the volume of gas (0 to 100 cm³).
For each time point, plot the corresponding volume of gas:
- (0, 0)
- (1, 52)
- (2, 78)
- (3, 91)
- (4, 97)
- (5, 100)
- (6, 100)
Connect the plotted points with a smooth curve that best represents the trend of the data, ensuring that it reflects the increasing volume of gas as time progresses.

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