It seems like the context or specific solutions you’re referring to is missing in your question. The change in pH of a solution can be influenced by various factors, such as the addition of acids, bases, or other chemicals. Without specific information about the solutions and the changes applied, it’s challenging to identify which solution showed the greatest change in pH.
If you have information about the specific solutions and the substances added to them, you can calculate the change in pH by comparing the initial pH to the final pH. The addition of an acidic substance (e.g., hydrochloric acid) would lower the pH, while the addition of a basic substance (e.g., sodium hydroxide) would increase the pH.
For a more accurate understanding, you may need to provide details about the solutions, the substances added, and the measurements of pH before and after the changes. If you have a specific scenario or experiment in mind, please provide more information so that I can offer a more tailored explanation.