1.

Which of the following relation is correct for degree of hydrolysis of CH_(3)COONH_(4) ?

Answer»

`h= sqrt((K_(h))/(c ))`
`h=sqrt((K_(a))/(K_(b)))`
`h=sqrt((K_(W))/(K_(a)K_(b)))`
`h=sqrt((K_(a)K_(b))/(K_(h)))`

Solution :If X is the solubility of `Ca_(3)(PO_(4))_(2)`,
`Ca_(3)(PO_(4))_(2)HARR 3Ca^(2+)+2PO_(4)^(3-)`
`K_(sp)=[Ca^(2+)]^(3)[PO_(4)^(3-)]^(2)`
`[Ca^(2+)]=3x, PO_(4)^(3-)=2x`
`therefore K_(sp)=(3x)^(3)(2x)^(2)=108 x^(5)`


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