Mole fraction of the solute in a 1.00 molal aqueous solution is

Options

A. 0.177
B. 0.0177
C. 0.0344
D. 1.77

Answer

B

Explanation

Mole fraction of solute
`=("Moles of solute")/("Moles of solute + mnoles of solvent")`
`=1/(1+55.56)[ :. " Moles of solvent " = 1000/18= 55.56]`
`= 1/(55.56)=0.0177`