1.

The solublity product of iron (III) hydroxide is 1.6 xx 10^(-39). If X is the solublity of iron (III) hydroxide, then which one of the following expressions can be used to calculate X

Answer»

`K_(sp) = X^(4)`
`K_(sp) = 9 X^(4)`
`K_(sp) = 27 X^(3)`
`K_(sp) = 27 X^(4)`

Solution :The solubility product `(K_(sp))` of a SPARINGLY SOLUBLE SALT at a given temperature may be defined as the product of the molar concentrations of its each raised to the power equal to its number of ions present in the equation representing the dissociation of one molecule of the salt.
`{:(Fe(OH)_(3), hArr ,Fe^(3+)+,3OH^(-)),(,,X,3X):}`
`K_(sp) = [Fe^(3+)][OH^(-)]^(3)`
`:. K_(sp) = X(3X)^(3) = 27 X^(4)`.


Discussion

No Comment Found

Related InterviewSolutions