1.

A 0.0020 m aqueous solution of an ionic compound Co(NH_(3))_(5) (NO_(2))Cl freezes at -0.00744^(@)C. The number of moles of ions which 1 mole of ionic compound produces on being dissolve in water is (K_(f)=-1.86^(@)C//m)

Answer»


SOLUTION :No. of moles of ions produce from 1 mole of ionic COMPOUND = i
`because T_(F)=K_(f)i.m.`
`therefore i=(T_(f))/(K_(f)xxm)=(0.00744)/(1.86xx0.0020)=2`.


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