Question

the mole fraction of h2so4 in 0.1 molal aqueous h2so4 solution is?

Answer 1

Molality means :

Number of moles of H₂SO₄ in 1000 g of water.

Moles of H₂SO₄ = 0.1 moles.

Molar mass of water = 2 + 16 = 18g

Moles of water :

1000/18 = 55.56 moles

Mole fraction of H₂SO₄ = (moles of H₂SO₄) /(moles of water + moles of H₂SO₄)

Mole fraction = 0.1/(55.56 + 0.1) = 0.1/55.66

= 1/556.56

= 1/556.5