Photo AI
A student used the apparatus shown in Figure 3 to investigate the reaction between marble chips and dilute hydrochloric acid - Edexcel - GCSE Chemistry - Question 2 - 2023 - Paper 2
Question 2
A student used the apparatus shown in Figure 3 to investigate the reaction between marble chips and dilute hydrochloric acid. The student recorded the volume of gas... show full transcript
Worked Solution & Example Answer:A student used the apparatus shown in Figure 3 to investigate the reaction between marble chips and dilute hydrochloric acid - Edexcel - GCSE Chemistry - Question 2 - 2023 - Paper 2
Step 1
Plot the results shown in Figure 4
Answer
-
Prepare the Graph: On a graph paper, label the x-axis as 'time in minutes' and the y-axis as 'volume of gas in cm³'. Choose appropriate scales for both axes to accommodate all data points.
-
Plot the Points: Mark the following points on the graph:
- (0, 0)
- (1, 52)
- (2, 78)
- (3, 91)
- (4, 97)
- (5, 100)
- (6, 100)
-
Draw the Curve of Best Fit: After plotting the points, draw a smooth curve that represents the trend of the data. The curve should start from (0,0), smoothly increase and level off near the maximum volume.
-
Check the Curve: Ensure that the curve does not connect the points straight and follows the general pattern of the points plotted.