SO LOST TRUE OR FALSE A. The main reason why water has a much higher boiling poi
ID: 973467 • Letter: S
Question
SO LOST
TRUE OR FALSE
A. The main reason why water has a much higher boiling point than acetone is the ability of water to undergo hydrogen bonding.
B. The electrons in a carbon-chlorine covalent bond are "shared" exactly equally between these two atoms.
C. Polar bonds in a molecule always result in a polar molecule.
D. The vapor pressure of CHCl3 is greater than that of CCl4 at the same temperature.
E. Stronger attractions between particles lead to higher equilibrium vapor pressures.
F. When the electronegativity difference between the two atoms that make up a bond is 0.0 the compound is covalent.
Explanation / Answer
A. True. Water has a much higher boiling point due to its ability to undergo hydrogen bonding. Although the Acetone is highly polar molecule,but don't have any hydrogen atoms attached directly to the oxygen, and so can't form hydrogen bond with each other. .
B. False. Its a hetero co-valent bond. The electrons are not shared exactly equally between these two atoms, due to difference in elctronegativity.
C. False. A molecule can have polar bonds, but it will be nonpolar if the bond dipoles cancel.
D. True
E. False. Stronger attractions between particles lead to lower equilibrium vapor pressure.
F. True. When the electronegativity difference between the two atoms that make up a bond is 0.0 the compound is covalent. But it is Nonpolar Covalent.
When the electronegativity difference between the two atoms that make up a bond is 0.3 - 1.4 the compound is also covalent. But it is Polar Covalent.
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