Weak acids and bases are not completely ionised when dissolved in polar medium like water
`H rarr H^(+) +A^(-)`
`{:(t_(0),C,O,O),(t_(eq),C-Calpha,Calpha,Calpha):}`
`K_(a)=(Calpha^(2))/(1-aplha)=Calpha^(2),alphasqrt((K_(a))/(C))`
`:. (alpha_(1))/(alpha_(2))=sqrt((Ka_(1))/(Ka_(2))),(alpha_(1))/(alpha_(2))=sqrt((C_(2))/(C_(1)))`
( For two acids at same conc.) (for same acid at diff conc. )
Relative strength of two weak monoprotic acids may be given as

Options

A. `([H^(+)]_(1))/([H^(+)]_(2))`
B. `(alpha_(1))/(alpha_(2))`
C. `sqrt((Ka_(1))/(Ka_(2)))`
D. All of the above

Answer

D