Plot a graph of temperature change against the volume of solution B added, and draw lines of best fit. The first line should pass through (0,0).

Here's how to approach the next parts of your question:

Graphing (Part 1):

To plot the graph:

• X-axis: Label the horizontal axis "Volume of solution B (HCl) / cm³".
• Y-axis: Label the vertical axis "Temperature change $\Delta T$ / °C".
• Plot points: Use the data from Table 2 to plot the temperature change ($\Delta T$) against the corresponding volume of solution B.
• Draw lines:
  • Draw one straight line that best fits the points before the maximum temperature change, extending it to pass through the point (0,0).
  • Draw a second straight line that best fits the points