Question

The mole fraction of solute in an aqueous solution is 0.5 then find mass of water in 10 moles of

solution:

(A) 9 gm (B) 18 gm

(C) 90 gm (D) 45 gm​

Answer 1

Answer:

c) 90gm..

Explanation:

mole fraction=moles of solute/total moles;

0.5=x/10';

x=5(moles of solute)

hence the moles of solvent i.e water =5;

moles=mass/molecular weight;

5=mass/18

mass=90gm

Answer 2

Answer:

the answer is C 90 gm

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