II. Iodine is essential for the synthesis of growth- regulating thyroid hormones. It can be absorbed by the body as iodide anion, I. Illustrate how the polar water molecules are oriented towards the iodide ion (I). For simplicity, draw three water molecules surrounding one I ion.

5.) The Henry's Law constant for O3 in water at 25 °C is 1.2x10-2 M/atm. What pressure of O3, in atm, would be required to give a [O3] = 0.0275 M?   Your Answer:

Calculate the mass of oxygen (in mg) dissolved in a 2.50 L bucket of water exposed to a pressure of 2.13 atm of air.  Assume the mole fraction of oxygen in air to be 0.21 and the Henry's law constant for oxygen in water at this temperature to be 1.3 × 10-3 M/atm. Molar mass for oxygen (O2) is 31.9988 g/mol.     A. 46.5 mg   B. 27.0 mg   C. 13.7 mg   D. 23.5 mg   E. 9.87 mg

Arrange the following in terms of increasing water solubility in section II and dipole moments in section III using the less than (<) inequality.

Subject  :- Chemistry

4. Calculate the molar concentration of oxygen in water at 25°C for a partial pressure of 0.22 atm. The Henry's law constant for oxygen is 1.3 x 103 mol/L. atm.

Would you expect carbon tetrabromide and water to be miscible? Why or why not?

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.

What properties of an element and/or water causes particular elements on the periodic table (Potassium for example) to react violently with water?

c) Is barium sulfate predicted to be more or less soluble that CaSO4? Explain.