The correct property of ethanol after being separated from the mixture is that it has a density of 0.80 g/cm3 at STP.
The question is focused on identifying a property of ethanol after it has been separated from a water-ethanol mixture.
Based on the provided table, the correct statement about ethanol is that it has a density of 0.80 g/cm3 at standard temperature and pressure (STP).
This property remains the same regardless of whether ethanol is in a mixture or in its pure state.
The separation process will not alter the density of pure ethanol, and statement 3 correctly describes this property.
The probable question may be:
A mixture of ethanol and water. Some properties of ethanol and water are given in table below.
Property Ethanol water
Boiling point at standard pressure 78 degree celsius 100 degree celsius
density at STP 0.80g/cm^2 1.00 g/cm^2
flammability flammable Nonflammable
melting point -114 degree celsius 0 degree celsius
Which statement describes a property of ethanol after being separated from the mixture?
1. Ethanol is non flammable.
2. Ethanol has a melting point of 0°C.
3. Ethanol has a density of 0.80 g/cm3 at STP.
4. Ethanol has a boiling point of 89°C at standard pressure.