SURFACE TENSION: I. A decrease is due to the weakening of the hydrogen bonds of water molecules II. It is increased when a surfactant is added III. Soap lowers surface tension of water resulting to the shrinkage of molecules on the surface 6. SAPONIFICATION: I. Can be carried out with HCl II. NaOH undergoes hydrolysis III. Its principle is used to

3. Maximum solubility of an ionic compounds in water depend on different sets of conditions. Out of five sets of conditions (given below), which one is the best for getting maximum solubility? A. The magnitude of the lattice energy should be large, and the enthalpy of hydration of the ions should be large. B. The enthalpy of hydration (Delta H) of the cation should be equal to the enthalpy of hydration of the anion, regardless of the magnitude of the lattice energy C. The magnitude of the lattice energy should be small, and the enthalpy of hydration of the ions should be small.   D. The magnitude of the lattice energy should be small, and the enthalpy of hydration of the ions should be large. E. The magnitude of the lattice energy should be large, and the enthalpy of hydration of the ions should be small.

e. The average human skin cell f. The length of the tip of your thumb (measured from first knuckle to the edge of your nail) 2. Consider two molecules, X and Y. a. X is able to dissolve in water. What does this imply about the favorability of interactions between molecules of X versus interactions between X and water? b. Y is unable to dissolve in water. What does this imply about the favorability of interactions between molecules of Y versus interactions between Y and water? Draw what happens to Y in water. 1

What is soluble in water? Group of answer choices A. All of these are soluble in water. B. NaNO3 C. KCl D. NH4Cl