Question

In a binary solution, the component present in smaller proportion is called solute while the one in excess is known as solvent. The solution containing 1 mole of the solute in 1L of solution is known as one molar solution while the solution in which 1 mole of solute is dissolved in 1 kg of the solvent is called one molal solution. The ratio of the no. of moles of a particular component to the total no. of moles in the solution is known as its mole fraciton
The mole fraction of glycerine `C_(3)H_(5)(OH)_(3)` in a solution containing 36 g of water and 46 g of glycerine is :
A. 0.46
B. `0.40`
C. `0.20`
D. 0.36

Answer 1

Correct Answer - C
Mole fraciton of glycerine
`= (n_("glycerine"))/(n_("glycine")+n_(H_(2)O))`
`((46)/(92))/((46)/(96)+(36)/(18))=(0.5)/(0.5+2.0)=(0.5)/(2.5)=0.2`