14. Solutions

The Henry's law constant for helium gas in water at 30°C is 0.000370 M/atm. When the partial pressure of helium above a sample is 0.400 atm, what is the concentration of helium in the water?

What is the millimolar solubility of oxygen gas, O2, in water at 16 °C, if the pressure of oxygen is 1.00 atm? Express the millimolar concentration numerically to two significant figures.

What volume of water, in mL, is needed to dissolve 6.3×10^1 mg of carbon monoxide gas (28.0 g/mol) when the partial pressure of carbon monoxide above the water is 3.8 atm at 25 °C? The Henry's constant for carbon monoxide gas in water at 25 °C is 9.5×10^-1 M/atm.