Question

How do we find densities and solubilities?

Answer 1

How else but by experiment and measurement........?

Explanation:

Now these days we are lucky. Densities and solubilities are extensively quoted on the web.

And `"density,"` `rho` `=` `"Mass"/"Volume"`,

And `"concentration,"` `=` `"Moles of solute"/"Volume of solution"`

At least for aqueous solutions, the volume does not change substantially upon dissolution of a solute.

Common solubilities, and solution densities are extensively tabulated in the CRC handbook, but again this is an experimental proposition.