The mole fraction of the solute in one molal aqueous solution is:

Options

A. `0.027`
B. `0.036`
C. `0.018`
D. `0.009`

Answer

C

Explanation

One molal aqueous solution contains 1 mole of the solute in 1000 g of `H_(2)O` i.e., 1000/18 = 55.55 moles of water
`therefore` mole fraction of the solute `=(1)/(1+55.55)`
`= 0.018`