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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. At infinite dilution , the percentage ionisation of both strong and weak electrolytes is :A. `1%`B. `20%`C. `50%`D. `100%` |
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Answer» Correct Answer - D Both strong and weak acids are almost completely ionised at infinite dilution. |
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