`3.24 g` of sulphur dissolved in `400g` benzene, boiling point of the solution was higher than that of benzene by `0.081 K`. `K_(b)` for benzene is `2.53 K kg mol^(-1)`. If molecular formula of sulphur is `S_(n)`. Then find the value of `n`. (at.wt.of `S =32`).

Answer

`S_(8)`

Explanation

Calculate molecular mass of the solute (sulphur). We get `M_(2)=253`. Hence, no. of atoms present in one molecule = 253/32 = 8, i.e., the formula is `S_(8)`.