From the graph shows the relationship between the volume of NaOH to pH in solution in isopropyl oil sample, it was found that A point is at pH = 10.3 and the volume stood at 4.1 ml.
As the graph shows the relationship between pH and volume of NaOH solution is added to the oil sample in isopropyl found that point A is at pH = 10.3 and volume is 4.1 ml.
From the graph shows the relationship between the pH with volume of NaOH added into a solution oil sample in isopropyl found that points A in pH. = 10.3 and volume in 4.1 ml.