Answer to Question #119426 in Organic Chemistry for Renato De Boni

Question

I have a saturated saline solution in water at a fixed temperature A. Can I dissolve yet another salt and thus increase the density of the solution and bring the temperature back to value A without any salt precipitating.

Answer 1

You can only if you dissolve a salt that does not contain sodium and chlorine ions (if you have a NaCl solution). Approximately dissolved salts of different cations and anions do not affect each other's solubility (especially for saturated solutions of medium or poorly soluble salts). The main thing is that the new salt does not interact with the already dissolved. If your goal is to increase the density of the solution, you will be able to dissolve some more salt without precipitation.

To answer your question more precisely, we need to know the pairs of salts that will be in solution.