Question

Question #60b08

Answer 1

`"Mole fraction, "chi_n="Moles of solute"/"Moles of all components in the solution"`

Explanation:

And thus `"moles of glucose"=(90*g)/(180.16*g*mol^-1)=0.50*mol`.

And `"moles of urea"=(30*g)/(60.06*g*mol^-1)=0.50*mol`.

And `"moles of water"=(162*g)/(18.01*g*mol^-1)=9.0*mol`.

So `chi_"glucose"=(0.50*mol)/((0.50+0.50+9.0)*mol)=0.05.`

And `chi_"urea"=(0.50*mol)/((0.50+0.50+9.0)*mol)=0.05.`

And `chi_"water"=(9.0*mol)/((0.50+0.50+9.0)*mol)=0.90.`

By the very way we define `"mole fraction"`, their SUM should be unity. Is this true in this case?