A 0.0020m aqueous solution of an ionic compound [Co (NH3)5 (NO)2] freezes at -0.0732.C . Number of moles of ions which1 mole of an ionic compound produces on being dissolved in water will be:
Formula used :
ΔTf = i. Kf. m
We have to calculate i from given data.
There is some typing mistake in given data. If i put all the given values, the answer will be 20 which is not possible.
But if we put depression in freezing point is 0.00732 (at the same range of molality, then we can get the feasible answer)
Putting all the values in given formula :
ΔTf = 0.00732ºC
Kf = 1.86 ºC/m
m = 0.0020 m
i = ΔTf / Kf. m
= 0.00732ºC/1.86 ºC/m x 0.0020 m
= 2
ΔTf = i. Kf. m
We have to calculate i from given data.
There is some typing mistake in given data. If i put all the given values, the answer will be 20 which is not possible.
But if we put depression in freezing point is 0.00732 (at the same range of molality, then we can get the feasible answer)
Putting all the values in given formula :
ΔTf = 0.00732ºC
Kf = 1.86 ºC/m
m = 0.0020 m
i = ΔTf / Kf. m
= 0.00732ºC/1.86 ºC/m x 0.0020 m
= 2