Consider the following:
- Solution A is a better buffer than solution B.
- Solution A had a pH of 7.6 before acid was added to it and had a pH of 7.2 afterwards
- Solution B had a pH of 7.6 before 50 drops of the same acid was added to it and had a pH of 7.2 afterwards.
Based on the above info, the number of drops of acid added to solution A must have been:
- 50
- less than 50
- more than 50