If `C =` molar concentration `(mol L^(-1))`
`d =` density of solution `(Kg L^(-1))`
`chi_(solute)` = mole fraction of solute
`M_(solute)` = molar mass of solute in `g mol^(-1)`
`M_(solvent)` = molar mass of solvent in `g mol^(-1)`
then

Options

A. `chi_(solute)=(CM_(solv))/(C(M_(solv)+M_(solute))+1000 d)`
B. `chi_(solute)=(CM_(solv))/(C(M_(solv)-M_(solute))+1000 d)`
C. `chi_(solute)=(CM_(solv)xx1000d)/(C(M_(solv)-M_(solute)))`
D. `chi_(solute)=(CM_(solv))/(C(M_(solv)+M_(solute))+1000 d)`

Answer

2

Explanation

`chi_(solute)=n_(solute)/(n_(solute)+n_(solvent))`
`=(CV_(L))/(CV_(L)+m_(solv) M_(solv))`