A solution is of `0.0400` mol of `C_(2)H_(4)Br_(2)` and `0.0600` mol of `C_(3)H_(6)Br_(2)` exerts a vapour pressure of `145.4` mm Hg at a certain temperature . Determine the vapour pressure of pure `C_(3)H_(6)Br_(2)` at this temperature . Assume the vapour pressure of `C_(2)H_(4)Br_(2)` at this temperature is 173 mm Hg and that the solution obeys Raoult's Law:

Options

A. `76.2` mm Hg
B. 118 mm Hg
C. 127 mm Hg
D. 138 mm Hg

Answer

c