what happened to the pH of the water sample as 0.1 M HCl was added?

what happened to the pH of the water sample as 0.1 M HCl was added?

How did this compare to what happened with addition of one drop of 0.1 M HCl to each buffer solution?

 

In Activity 1, why did the pH of the buffer solutions change after the addition of 10 drops of 0.1 M NaOH? Activity 2

 

Activity 2

Data Table 2

 

Initial pH pH after 1 drop 0.1M NaOH pH after 2 drops 0.1M NaOH pH after 4 drops 0.1M NaOH pH after 8 drops 0.1M NaOH
100%
50%
25%
12.5%

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