Answer:
The mole fraction of [tex]KCl[/tex] is [tex]N_{KCl}=0.099[/tex]
Explanation:
Generally number of mole is mathematically represented as
[tex]n = \frac{mass}{Molar mass }[/tex]
The number of mole of [tex]KCl[/tex] is
[tex]n_{KCl} = \frac{mass \ of \ KCl}{Molar\ mass \ of \ KCl }[/tex]
[tex]n_{KCl} = \frac{125}{74.6}[/tex]
[tex]=1.676 \ moles[/tex]
The number of mole of [tex]H_2O[/tex] is
[tex]n_{H_2O} = \frac{mass \ of \ H_2O}{Molar\ mass \ of \ H_2O }[/tex]
[tex]n_{H_2O} = \frac{275}{18}[/tex]
[tex]= 15.28 \ moles[/tex]
Mole fraction of [tex]N_{KCl}= \frac{n_{KCl}}{n_{KCl} + n_{H_2O}}[/tex]
[tex]= \frac{1.676}{15.28 +1.676}[/tex]
[tex]N_{KCl}=0.099[/tex]
Answer:
The mole fraction of KCl is 0.13
Explanation:
no of moles of KCl (n KCl) = W/G.F.Wt
= 135/74.6
= 1.81moles
no of moles of H2O (nH2O) = W/G.F.Wt
= 225/18 = 12.5 moles
mole fraction of KCl ( XKCl) = nKCl/nKCl + nH2O
= 1.81/(1.81+12.5)
= 1.81/14.31
The mole fraction of KCl is = 0.13
