Using the diagram above, calculate the relative density of x, if the density of methanol is 800kgm−3
density of methanol = 800kgm−3 → 0.8gcm−3
At equilibrium, the density of methanol = the density of liquid x
ρ x h x g = ρx x hx x g
0.8 x 7.1 = ρx x 14.2
ρx = 0.8×7.114.2 = 0.4gcm−3
∴, the relative density of liquid x = 0.4
Relative density of X = density of liquid xdensity of methanol = 0.40.8 = 0.5
