Question

The density of a solution containing 40% by mass of hcl is 1.2 g/ml. Calculate the molarity of the solution.

Answer 1

Answer is in attachment...

Answer 2

$M.M of HCL = 36.5/molecule \\ \\ \sf \: M = \dfrac{\%W/W × 10 × d}M \\ \\ \sf \dfrac{40×10×12}{36.5} \\ \\ \sf = \dfrac{480}{36.5}=13.5Molar$