Question

question 6 (1 point)
the boiling point of ethanol is 78 °c, and that for acetone is 56 °c. this indicates the strength of intermolecular attractions.
which liquid has the highest
surface tension 1
heat of fusion 2
heat of vaporization 3
melting point 4
a. ethanol b. acetone c. cant tell from this information

Explanation:

Step1: Relationship between boiling point and intermolecular forces

Higher boiling point indicates stronger intermolecular forces. Ethanol has a higher boiling point (\(78^{\circ}C\)) than acetone (\(56^{\circ}C\)).

Step2: Surface tension

Surface tension is related to intermolecular forces. Stronger intermolecular forces lead to higher surface tension. Since ethanol has stronger intermolecular forces (higher boiling - point), it has higher surface tension.

Step3: Heat of fusion

Heat of fusion is related to the energy required to convert a solid to a liquid. But we are only given boiling - point (liquid - to - gas phase change) information. There is no direct relation between boiling - point and heat of fusion provided in this context.

Step4: Heat of vaporization

Heat of vaporization is the energy required to convert a liquid to a gas. Stronger intermolecular forces mean more energy is required to vaporize the liquid. Ethanol, with stronger intermolecular forces (higher boiling - point), has a higher heat of vaporization.

Step5: Melting point

Melting point is related to the solid - to - liquid phase change. We are given information about the liquid - to - gas phase change (boiling - point). There is no direct way to compare melting points from boiling - point data alone.

Answer:

1. A. ethanol
2. C. can't tell from this information
3. A. ethanol
4. C. can't tell from this information