NEET Questions Solved


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

(a) 0.0177

(b) 0.0344

(c) 1.7700

(d) 0.1770

(a) 1.00 molal aqueous solution = 1.0 mole in 1000g water

nsolute = 1; Wsolvent =1000g

nsolvent = 1000/18 = 55.56

Xsolutensolutensolute+nsolvent

Xsolute = 1/1+55.56 = 0.0177 

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