Question

A cosmetic company manufactures hand sanitizers, and one of the main ingredients used is 70.0 % isopropyl alcohol by volume. [Note: The density of isopropyl alcohol is 0.786 g/cm3 and Mr of isopropyl alcohol (CH3CHOHCH3) is 60.0 g/mol] a) What is the IUPAC name of isopropyl alcohol? b) Calculate the molality of isopropyl alcohol. c) Calculate the molarity of isopropyl alcohol. d) Calculate the % by mass of isopropyl alcohol. e) Calculate the ppm by mass of isopropyl alcohol.

Answer 1

a) propan-2-ol

b) 30.567 m

c) 9.17 M

d) 64.7 %

e) 647141 ppm