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A 0.0020 m aqueous solution of an ionic ...

A 0.0020 m aqueous solution of an ionic compound `Co(NH_(3))_(3)(NO_(2))Cl` freezes at `-0.00732^(@)C`. Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be `(K_(f)= 1.86^(@)C//m)`.

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The correct Answer is:
2
`Delta T_(f)= 0- (-0.00732^(@))= 0.00732`
`Delta T_(f)= ixx K_(f) xx m rarr i= (Delta T)/(K_(f) xx m) = (0.00732)/(1.86 xx 0.002)=2`
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