A mixture contains 21.7 g NaCl, 3.74 g KCl, and 9.76 g LiCl. what is the mole fraction of NaCl?

1 Answer
anor277
Apr 19, 2018

#chi_"NaCl"=0.570#

Explanation:

#chi_"NaCl"="Moles of sodium chloride"/"Total moles of all the salts."#

#=((21.7*g)/(58.44*g*mol^-1))/((21.7*g)/(58.44*g*mol^-1)+(3.74*g)/(74.55*g*mol^-1)+(9.76*g)/(42.39*g*mol^-1))#

#0.371/0.652=0.570#

If you work out #chi_"KCl"# and #chi_"LiCl"#...the sum of the mole fractions of each component should equal WHAT?

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