Step 1 of 5) One useful physical property of colloids, the scattering of visible light, is referred to as the Tyndall effect. Aqueous colloids are classified as hydrophilic or hydrophobic. Hydrophilic colloids are common in living organisms, in which large molecular aggregates (enzymes, antibodies) remain suspended because they have many polar, or charged, atomic groups on their surfaces that interact with water. Hydrophobic colloids, such as small droplets of oil, may remain in suspension through adsorption of charged particles on their surfaces. Colloids undergo Brownian motion in liquids, analogous to the random three-dimensional motion of gas molecules. Based on Figure 13.18, you might think that the reason volatile solvent molecules in a solution are less likely to escape to the gas phase, compared to the pure solvent, is because the solute molecules are physically blocking the solvent molecules from leaving at the surface. This is a common misconception. Design an experiment to test the hypothesis that solute blocking of solvent vaporization is not the reason that solutions have lower vapor pressures than pure solvents.
(a) What is the relationship between surface tension and temperature? (b) What is the relationship between viscosity and temperature? (c) Why do
ISBN: 9780134414232
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Solution for problem 11.33 Chapter 11
Chemistry: The Central Science | 14th Edition
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(a) What is the relationship between surface tension and temperature? (b) What is the relationship between viscosity and temperature? (c) Why do