3.) you are given the following boiling point data. Which of the liquid would yo

Question

3.) you are given the following boiling point data. Which of the liquid would you expect to have the highest vapor pressure of room temperature? 4.) which of the following is paired incorrectly? D) nity in polar Solvents E) none of the above 3. You are given the following boiling point data Which one of the liquids would you expect to have the highest vapor pressure at room temperature? A) water, H20 100°C B) methanol, CH3OH 64.96°C C) ethanol, CH3CH2OH 78.5°C D) diethyl ether, CH30H2-O-CH2CH3 34.5°C E) ethylene glycol, Ho-CH2-CH2-oH 198°C 4. Which of the following is paired incorrectly? A) ice-molecular solid B) amorphous highly regular structured solid C) diamond covalent network solid D) gold-metallic solid E) calcium carbonate ionic solid 5. What is the simplest formula of a solid containing A, B, and Catoms in a cubic lattice in which the A atoms occupy the corners, the B atoms the faces of the unit cell, and the C atoms the body-center position? A) ABC B) AB3C C) As B4C6 D) AsBC6 E) AB4C2.

Explanation / Answer

Ans 3 D . diethyl ether CH3CH2-O-CH2CH3 34.5o C

There is a misprint in the formula of this compound, the correct one is shown above.

Diethyl ether will have highest vapor pressure amongst all at room temperature due to its lowest boiling point .

The compound has small inter molecular forces in between its molecules , hence less energy is required for the forces to break and the molecules to escape in the atmosphere . Hence more molecules will contribute more towards the vapour pressure as compared to all others .

Lower boiling point corresponds to higher vapour pressure .

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