Chemistry, asked by amanhashmi100pbtbs5, 1 year ago

What is the mole fraction of solute in 2.5 molal solution?

Answers

Answered by medhakriti

2.5 molal aq soln means 2.5 solute in 1000 gm water. Therefore, mole of water is 1000/18 i.e, 55.55. Mole fraction's formula is Xa= [{n(solute)}/{n(solute)+n(solvent)}] and that according to question is 2.5/(2.5+55.55) = 2.5/ 58.05 = 0.43066 is the answer.

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