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A mixture consists of ethanol and water. Some properties of ethanol and water are given in the table


January 2019 NY Regents Chemistry Exam


39 A mixture consists of ethanol and water. Some properties of ethanol and water are given in the table below.




Which statement describes a property of ethanol after being separated from the mixture?

(1) Ethanol is nonflammable.

(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.


Solution: Let's look at the chart to eliminate some of the answer choices. According to the chart ethanol is flammable, eliminating choice 1. It has a melting point of -114C eliminating choice 2. It has a boiling point of 78C eliminating choice 4. It has a a density of 0.80 g/cm3 according to the chart.

Answer: 3


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