The equivalent conductances of an infinitely dilute solution `NH_(4)CI` is 150 and the ionic conductances of `OH^(-)` and `CI^(-)` ions are 198 and 76 respectively. What will be the equivalent conductance of the solution of `NH_(4)OH` at infinite dilution. if the equivalent conductance of a `0.01N` solution `NH_(4)OH` is `9.6, what will be its degree of dissociation.

Answer

`272, 0.0353`

Explanation

`^^_(eq)^(@)(NH_(4)Cl)=150=^^_(eq)^(@)(NH_(4)^(+))+^^_(eq)^(@)(Cl^(-))`
`^^_(OH^(-))^(@)=198,^^_(Cl^(-))^(@)=76,^^_(eq)(NH_(4)OH)=9.6,C=0.01`
`^^_(eq)^(@)(NH_(4)OH)=150-76+198=272`
`alpha=(^^_(eq)(NH_(4)OH))/(^^_(eq)^(@)(NH_(4)OH))=(9.6)/(272)=0.0353`