Question 73 of 132

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