The freezing point depression constant (K
f) of benzene is 5.12 K kg mol-1. The freezing point
depression for the solution of molality 0.078 m
containing a non-electrolyte solute in benzene is
(rounded off upto two decimal places) :
(1) 0.20 K
(2) 0.80 K
(3) 0.40 K
(4) 0.60 K