What is the mole fraction of hcl in a 4.50 m aqueous hcl solution?

0.075 is the mole fraction for HCl

Explanation:

Mole fraction = Moles of solute or solvent / Total moles

Total moles = moles of solute + moles of solvent

In this solution:

HCl is the solute

H₂O is the solvent

4.50 m means molal, 4.50 moles of HCl in 1kg of water.

Let's determine the moles of water

1000 g. 1mol/18 g = 55.5 moles

Total moles = 4.50 + 55.5 = 60.05 moles

Mole fraction of HCl = 4.50 / 60.05 → 0.075