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

Given

Given 1 molal aqueous solution = 1 mole of solute in 1 kg of water.

Find out

We need to estimate the mole fraction of the solute in a 1.00 molal aqueous solution

We know that

Number of moles of solute = 1

Number of moles of water = 1000/18= 55.556

Mole fraction of solute = number of moles of solute/number of moles of solute + number of mass of solvent

Mole fraction= 1/ 1 + 55.556

Mole fraction= 1/ 56.556

= 0.01768

= 0.0177 (approx)

Answer

So the correct answer is option (3)(c) 0.0177

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