The strength of elctrolytes is expressed in terms of degree of dissociation `alpha` For strong electrolyte `alpha` is close to one and for weak electrolytes `alpha` is quite small. According to Ostwald Dilution Law `alpha=sqrt((K)/(C))`
For an acid `[H^(+)] = sqrt(K_(a)C)`
For a base `[OH^(-)] =sqrt(K_(b)C`
The relative strengths of acids or bases can be compared in terms of the square roots of their `K_(a) " or " K_(b)` values.
The dissociation constant of monobasic acids A,B and C are `10^(-4), 10^(-6) " and " 10^(-10)` respectively. The concentration of each is 0.1 M . Which is correct order or their pH values ?
A. `A lt B lt C`
B. `C lt A lt B `
C. `B lt C lt A `
D. `B lt A ~~ C`
