Question

the mole fraction of ethyl alcohol in its solution with methyl alcohol is0.8.theV.P of ethyl alcohol at this temp is 40mmHg. what is its V.P in solution if solution is ideal

Answer 1

According to Dalton's law of partial pressure :
p₁=y_1$\times$ p_total
Here for ethyl alcohol ;
40 = 0.8 $\times$P_total
p_total = $\frac{40}{0.8}$=50 mm Hg
​Hence; the V.P of solution is 50 mm Hg