When 36 g of a solute having the empirical formula CH2O is dissolved in 1.2 kg of water, the solution freezes at
-0.93°C. What is the molecular formula of solute (K= 1.86 kg K mol-1)

(1) C2H4O

(2) C2H2O2
(3) C2H4O3

(4) C2H4O2

Concept Videos :-

#11 | Depression in Freezing Point
#12 | Ques : Elevation in Boiling Point & Depression in Freezing Point

Concept Questions :-

Depression of Freezing Point

ΔTf= i Kf m

0.93= 1 x 1.86 x 36/M   ; M=60
                            1.2

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