An organic compound (CxH2yOy) was burnt with twice the amount of oxygen needed for complete combustion to CO2 and H2O. The hot gases when cooled to 0∘C and 1 atm pressure, measured 2.24 L. The water collected during cooling weighed 0.9 g. The vapour pressure of pure water at 20∘C is 17.5 mm Hg and is lowered by 0.104 mm Hg when 50 g of the organic compound is dissolved in 1000 g of water. Give the molecular formula of the organic compound.

An organic compound (CxH2yOy) was burnt with twice the amount of oxyge

1.	An organic compound (CxH2yOy) was burnt with twice the amount of oxygen needed for complete combustion to CO2 and H2O. The hot gases when cooled to 0∘C and 1 atm pressure, measured 2.24 L. The water collected during cooling weighed 0.9 g. The vapour pressure of pure water at 20∘C is 17.5 mm Hg and is lowered by 0.104 mm Hg when 50 g of the organic compound is dissolved in 1000 g of water. Give the molecular formula of the organic compound.
Answer» An organic compound $(C_{x} H_{2 y} O_{y})$ was burnt with twice the amount of oxygen needed for complete combustion to $C O_{2}$ and $H_{2} O$ . The hot gases when cooled to $0^{\circ} C$ and $1 a t m$ pressure, measured $2.24 L$ . The water collected during cooling weighed $0.9 g$ . The vapour pressure of pure water at $20^{\circ} C$ is $17.5 m m H g$ and is lowered by $0.104 m m H g$ when $50 g$ of the organic compound is dissolved in $1000 g$ of water. Give the molecular formula of the organic compound.