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# Percent by mass of palmatic acid in Commercial steric acid

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Commercial steric acid (C17H35COOH) contains palmatic acid (C15H31COOH) as an impurity. If a 1.115 gram sample of commerical steric acid is dissolved inm 43.95 grams of benzene, the freezing point is found to be 5.072 degrees celcius. If the freezing point of pure benzene is 5.533 degrees celcius what is the percent by mass of palmatic acid in the sample?

https://brainmass.com/chemistry/acids-and-bases/percent-mass-palmatic-acid-commercial-steric-acid-34059

#### Solution Preview

Commercial steric acid (C17H35COOH) contains palmatic acid (C15H31COOH) as an impurity. If a 1.115 gram sample of commerical steric acid is dissolved inm 43.95 grams of benzene, the freezing point is found to be 5.072 degrees celcius. If the freezing point of pure benzene is 5.533 degrees celcius what is the percent by mass of palmatic acid in the sample?

freezing point depression
Î” T f = K f m
Î” T f = freezing point depression
Kf= molal freezing point depression constant
m= molality of the ...

#### Solution Summary

The solution calculates percent by mass of palmatic acid in Commercial steric acid.

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