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The strength of elctrolytes is expressed in terms of degree of dissociation alpha For strong electrolyte alpha is close to oneand 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 ? |
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Answer» `A LT B lt C` |
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