Multiple Choice
Which type of intermolecular force is present between molecules of Cl_2?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
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Which of the following substances has a higher surface tension than water?
A
Acetone
B
Mercury
C
Glycerol
D
Ethanol
Verified step by step guidance1
Understand that surface tension is a measure of the cohesive forces at the surface of a liquid, which depends on the strength of intermolecular forces within the liquid.
Recall that water has strong hydrogen bonding, giving it relatively high surface tension compared to many common liquids like acetone and ethanol, which have weaker intermolecular forces.
Consider the nature of each substance: acetone and ethanol have weaker dipole-dipole and hydrogen bonding interactions, while glycerol has multiple -OH groups leading to strong hydrogen bonding, increasing its surface tension.
Recognize that mercury is a metal in liquid form at room temperature and has very strong metallic bonding forces, resulting in a much higher surface tension than water or organic liquids.
Conclude that among the given options, mercury has the highest surface tension due to its strong cohesive metallic bonds, surpassing even water.
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