Question

A solution contains 19 g of NaCl in a total volume of 325 mL. What is the NaCl concentration of the solution in g/L, % w/v and mol/L?

Answer 1

Molar mass of NaCL = 58.44

Moles = $\frac{19}{58.44}=0.3251$

325 mL = 0.325L

Morality = $\frac{0.3251}{0.325}=1.0003 g/L$

1.0003×100= 100.03%w/v or 1.0003mol/L