An ideal solution has equal mol-fraction f two volatile components A and B .in the vapour above the solutions, the mol -fractions of A and B :

Options

A. Are equal both `0.50`
B. Are equal but necessarily` 0.50`
C. Are not very likely to be equal
D. Are `1.00` and `0.00`resepctively

Answer

B

Explanation

Mole fraction in vapour phase also depend upon volatility of A and B i.e `P_(A)^(0)`and `P_(B)^(0)`