The student opened the tap on each burette and allowed the base to flow into the beakers of acid. The changes in pH were recorded as the base was added. The graph shows both sets of results.
14
7
)Fig. 22.14
0 c. What was the pH of the solutions when 50 cm3
25 Volume of base added (cm3) of base had been added?
d. What is the pH of a neutral solution? e. Identify a laboratory base the student could have used in this investigation.
j Go to page 116 of your Assessment Book to answer more exam-style questions.