Say you have a solution with 4 substances, X substance with pH 3.3, Y with a pH of 2.6, Z substance pH of 2.4 and W with a pH of 2.5. All of the substances are at 100% concentration You also know the volume and pH of the overall solution. Is it possible to determine purity in terms of X? (concentration). I was thinking no because there are too many substances of unknown volume in the solution.