Q19. A pupil used a sensor to record the change in pH of 10 cm of an acid solution when an alkali solution was added a little at a time. The concentrations of the alkali and acid solutions were fixed.
His results are shown in the table below.
volume of alkali added (c pH of resulting mixt
0.0
5.0
2.0
5.0
5.0
6.0
5.5
8.0
6.0
7.0
120
8.0
8.5
16.0
90
90
200
Use his results to draw a graph on the grd below.
Label the axes.
Plot the points.
Draw a smooth curve.​