A solution of LiCl in water is 18.0 wt% LiCl. What is the mole fraction of LiCl?

A solution of LiCl in water is 18.0 wt% LiCl. What is the mole fraction of LiCl?

Given,

Licl molar mass is 42.394

= `"18"/"42.394"` = 0.425 moles of LiCl

Thus, water is 18.0152

= `"82"/"18.0152"` = 4.55 moles of `"H"_2`O

This way, 0.425 + 4.55 = 4.98

`"(0.425)"/"(4.98)"` = 0.0853