Solubility & Henry's Law
1. Classify the following as solution, solvent, and solute:
a.
b.
c.
2. The solubility of oxygen in cold pond water is 0.0113 g/L at a
pressure of 1.0 atm. What is the solubility of the oxygen in the pond
water if the pressure is increased to 3.0 atm?
3. The "bends" is a condition that can occur in SCUBA divers due to the
solubility of N2 in the blood. As the diver dives deep, the solubility
of N2 in his blood is 0.236 g/L at 13.16 atm. What is the solubility of
N2 as he rises to the surface where the pressure is 0.78 atm?
4. The solubility of CO2 in a 2L bottle of cola is about 2.23 g/L at 0.998
atm. When you shake the bottle, the CO2 will become less soluble,
causing the gas to come out of solution. If the solubility is reduced
to 1.56 g/L, what will the pressure inside the bottle be if
temperature remains constant?
5. If the solubility of a gas in water is 0.77g/L at 3.5 atm of pressure,
what is its solubility at 1.0 atm of pressure if temperature is held
constant?
6. The solubility of a gas is 0.58 g/L at a pressure of 104 kPa. What is
its solubility if the pressure increases to 250 kPa at the same
temperature?
7. A gas has a solubility in water at 0ºC of 3.6 g/L at a pressure of 1.0
atm. What pressure is needed to produce an aqueous solution
containing 9.5 g/L of the same gas at 0ºC?
8. The solubility of methane, the major component of natural gas, in
water at 1.00 atm of pressure is 0.026g/L. If temperature remains
constant, what will be the solubility of the gas the following
pressures?
a. 0.60 atm
b. 1.80 atm