Question

Mole fraction of the solute in a 1.00 molal aqueous
solution is :
(a) 0.1770 (b) 0.0177
(c) 0.0344 (d) 1.7700

Answer 1

Answer:

Mole fraction of the solute in a 1.00 molal aqueous

solution is :

(a) 0.1770

(b) 0.0177

c) 0.0344

d) 1.7700

Answer 2

Ans

1.00 molal solution means 1 mole of solute in 1 kg (or 1000 g) of water.

Number of moles of solute=1

Number of moles of solvent =1000/18

Mole fraction of Solute =1/1+55.551

=0.01768

Hence, the correct option is b