Question

The normal freezing point of nitrobenze ( c6 h5 no2) is. 278.82k .A 0.25 molal solution of a certain solute in nitrobenzene cause a calculate Kf

Answer 1

Depression of freezing point is given by

∆Tf =kf/m

kf=278.82×0.25

kf=69.7K mol kg-1

i hope this helps