1.

The solubility product for silver choride is `1.2xx10^(-10)` at 298 K. Calculate the solubility of silver chloride at 298 K.

Answer» Silver chloride dissociates according to the equation :
`AgCl(s) hArr AgCl(aq) hArr AG^(+) (aq) + Cl^(-)(aq)`
Let s be the solubility of AgCl in moles per litre.
Consequently, the molar concentration of `Ag^(+) and Cl^(-)` will also be s each. Substituting in the expression for solubility product of AgCl,
`K_(sp)=[Ag^(+)][Cl^(-)]=s xx s =s^(2)`
But `K_(sp)= 1.2xx10^(-10) ` (Given) `:. s^(2)=1.2xx10^(-10) or s = sqrt(1.2xx10^(-19))=1.1xx10^(-5) "mol " L^(-1)`


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