Question

Calculate the mole fraction of the total ions in an aqueous solution
prepared by dissolving 0.400 moles of CaF2 in 850.0 g of water.

Answer 1

Answer:

=1/126

Explanation:

Mole fraction =no.of mole of solute /no.of mole of Sol

Mole of CaF2 0.4

Mole of water =850/18(H20=2×1+8×2basicaly molar mass)

=50mol

Now

Solute is Caf2 and Sol has Caf2and water thus

=0.4/50+0.4=1/126