The freezing point of a solution containing `50 cm^(3)` of ethylene glycol in `50 g` of water is found to be `-34^(@)C`. Assuming ideal behaviour, Calculate the density of ethylene glycol `(K_(f)` for water = `1.86 K kg mol^(-1)`).

Options

A. 1.13 g/`cm^3`
B. 2.00 g/`cm^3`
C. 1.8 g/`cm^3`
D. 2.25 g/`cm^3`

Answer

A

Explanation

`DeltaT=K_fxx(wxx1000)/(mxxW)=34=1.86xx(wxx1000)/(62xx50)`
`w=56.66g=V=w/d,50=56.66/d=d=1.13g//cm^3`