Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions.(a) CHCl_(3(l))(b)CH_(2)Cl_(2(l))

Using Raoult's law explain how the total vapour pressure over the solu

1.	Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions.(a) CHCl_(3(l))(b)CH_(2)Cl_(2(l))
Answer» Solution :(i) `CHCl_(3)` : For a binary solution having both components as volatile liquids (viz. `CHCl_(3)` and `CH_(2)Cl_(2)`), the total pressure will be `p=x_(1)p_(1)^(0)+x_(2)p_(2)^(0)` `= p_(1)^(0)+1-x_(2)p_(2)^(0)` `= (p_(1)^(0)-p_(2)^(0))x_(1)+p_(2)^(0)` p = total vapour pressure of the given MIXTURE / binary solution of the given volatile liquids. `p_(1)=` partial vapour presure of component 1 (i.e., `CHCl_(3)`) `p_(2)=` partial vapour pressure of component 2 (i.e., `CH_(2)Cl_(2)`) (ii) `NaCl_((s))`and `H_(2)O_((l))` : For a solutioncontaining non - volatile solute i.e., `NaCl_((s))`and `H_(2)O_((l))`, the Raoult.s LAW is applicable only to vaporisable component (1) i.e., `H_(2)O_((l))` and total vapour pressure is written as `p=p_(1)=x_(1)p_(1)^(0)` where `p_(1)^(0)p_(1)` oreresents the vapour pressure of pure `H_(2)O_((l))`