Aniline is a liquid which does not mix with water. When a small quantity of it is poured into a beaker of water at `20^(@)C`, it sinks to the bottom. The densities of aniline and water at `20^(@)C` and `1021 kgm^(-3)` and `998 kgm^(-3)` respectively. Find the minimum temperature to which the mixture is to be heated so that aniline will form a globule and just start floating.
`gamma_("aniline")=85xx10^(-5).^(@)C^(-1), gamma_("water")=45xx10^(-5).^(@)C^(-1)`.

Answer

`79.15^(@)C`