Question

Let’s say that I want to get my mixture to a certain pH but I add too much water to my solution. Can I just add the same volume of my substance as the water I added back into the mixture to get my initial pH? Why/ why not?

Answer 1

Dilution is the process of decreasing the concentration of a solute in a solution, usually simply by mixing with more solvent like adding more water to a solution. To dilute a solution means to add more solvent without the addition of more solute. The resulting solution is thoroughly mixed so as to ensure that all parts of the solution are identical.

The same direct relationship applies to gases and vapors diluted in air for example. Although, thorough mixing of gases and vapors may not be as easily accomplished.