Rubbing alchol sold in stores is aqueous 2-propanol, CH3CHOHCH3(aq).
Rubbing alcohol is availible in concentrations of 70.0% and 91%
2-propanol by volume.
To make 100. mL of 70.% aqueous 2-propanol, 70.mL of 2-propanol is
dilute with enough water to produce a total volume of 100.mL. In a
laboratory investigation, a student is given a 132mL sample of 91%
aqueous 2-propanol to separate using the process of distillation.
73 State evidence that indicates the proportions of the components in
rubbing alcohol can vary.
|Answer--> There are 70.% and 91% solutions.
74 Identify the property of the components that make it possible to use
distillation to separate the 2-propanol from water.
|Answer--> Boiling points (IMFs..OK)
75 Determine the volume of 2-propanol in the 132-mL sample.