Question

What is the molarity of `"50% w/w"` `HCl` solution for which `rho_"solution"=1.15*g*cm^-3`?

Answer 1

You have not specified a solvent.......and the question has not been written by a chemist......

Explanation:

We assume an aqueous solution of hydrochloric acid, and clearly a `1*mL` volume of the stuff contains `50%xx1*cm^3xx1.15*g*cm^-3=0.575*g` `HCl`.....

And thus the concentration is.......`"moles of solute"/"volume of solution"`

`((50%xx1*cm^3xx1.15*g*cm^-3)/(36.46*g*mol^-1))/(1xx10^-3*L)-=15.8*mol*L^-1`.

The most concentrated hydrochloric acid you can buy is `36-38%(w/w)`; typically we are supplied conc. `HCl` as a `10.5*mol*L^-1` solution in the laboratory.