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A weak electrolyte obeys Ostwald's dilution law. Select the correct statements. |
Answer» <html><body><p>A <a href="https://interviewquestions.tuteehub.com/tag/decrease-946104" style="font-weight:bold;" target="_blank" title="Click to know more about DECREASE">DECREASE</a> in concentration of weak acid shows an incrase in its degree of dissociation `(alpha) `<br/>As ` c to 0, ` the degree of dissociation `(alpha ) ` approaches unity<br/>A plot of `alpha ^(2)"versus"(1)/( c)` <a href="https://interviewquestions.tuteehub.com/tag/gives-1007647" style="font-weight:bold;" target="_blank" title="Click to know more about GIVES">GIVES</a> a straight line with slope equal to dissociation <a href="https://interviewquestions.tuteehub.com/tag/constant-930172" style="font-weight:bold;" target="_blank" title="Click to know more about CONSTANT">CONSTANT</a> of weak electrolyte <br/>A plot of `alpha ^(2) ` versus . C gives a straight line with slope equal to dissociation constant of weak electrolyte </p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :` K_a =C alpha ^(2) rArr alpha = sqrt(( K_a)/( C )) " as " C to 0,alpha to 1`</body></html> | |