Which one of the following substances is expected to have the highest boiling po

Question

Which one of the following substances is expected to have the highest boiling point? Br_2 Cl_2 F_2 D) I_2 Which of the following properties indicates the presence of strong intermolecular forces in a liquid? a low heat of vaporization a low boiling point a low vapor pressure None of the above. A liquid boils when its vapor pressure is exactly 1 atmosphere. vapor pressure is equal to, or greater than, the external pressure pushing on it. temperature is equal to 273 K (standard temperature). temperature is greater than room temperature. Which of the following would be expected to have the highest vapor pressure at room temperature? ethanol, bp = 78 degree C water, bp = 100 degree C methanol, bp = 65 degree C acetone, bp = 56 degree C

Explanation / Answer

1. The boiling points correspond to stronger intermolecular forces. In these molecules there is no hydrogen bonding. These are homonuclear diatomic molecules, hence they do not possess dipole moment. The intermolecular forces depend on the size of the molecule, hence highest boiling point is for I2. (D is the answer)

2. C is the answer (a low vapor pressure). A low vapor pressure means there is a strong intermolecular forces between the molecules and they in turn possess higher boiling point.

3. A liquid boils when the vapor is equal to or greater than the external pressure pushing on it. Hence the answer B

4. Higher the Vapor pressure, lower the boiling point. Hence acetone with a boiling point of 56 degree Celsius has the highest vapor presure. Answer is D

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.