A student used the apparatus shown in Figure 15 to investigate the reaction between marble chips and dilute hydrochloric acid - Edexcel - GCSE Chemistry - Question 8 - 2023 - Paper 2

Begin by marking the time on the x-axis, using the provided intervals (0 to 6 minutes).

Mark the volume of gas produced on the y-axis, ranging from 0 to 100 cm³.

For each time interval, plot a point according to the gas volume data:

• At 0 minutes, plot (0, 0).
• At 1 minute, plot (1, 52).
• At 2 minutes, plot (2, 78).
• At 3 minutes, plot (3, 91).
• At 4 minutes, plot (4, 97).
• At 5 minutes, plot (5, 100).
• At 6 minutes, plot (6, 100).

Connect the plotted points smoothly to create a curve of best fit, indicating the trend of gas volume production over time.