Question

Which liquid has the lowest vapor pressure at 65°C?

(1) ethanoic acid (3) propanone
(2) ethanol (4) water

Answer 1

- - (1) ethanoic acid



Ethanoic acid is the liquid that has the lowest vapor pressure at 65°C

Answer 2

Answer: (1) ethanoic acid

Explanation:

• The liquid that has the lowest vapor pressure at 65.0 °C is ethanoic acid.

• As shown in the attached image, the figure in the image shows the relation of vapor pressure with temperature for the mentioned four liquids (ethanoic acid, propanone , ethanol and water).

• Extend a verical line at 65.0 °C and then get the corresponding vapor pressures of the four liquids.

• You will find that the liquid that has the lowest vapor pressure at 65.0 °C is ethanoic acid.