At 298 K, the Henry's law constant for oxygen is 0.00130 M/atm. Air is 21.0% oxygen. 1) At 298 K, what is the solubility of oxygen in water exposed to air at 1.00 atm?

2) At 298 K, what is the solubility of oxygen in water exposed to air at 0.89 atm?

3) If atmospheric pressure suddenly changes from 1.00 atm to 0.893 atm at 298 K, how much oxygen will be released from 4.70L of water in an unsealed container?

a) 0.000273 mol /L

b) 0.000244 mol/L

c) 0.0001044 mole

Explanation:

The partial pressure of oxygen in the atmosphere  =

1 atm %  of atm O2 atm

a) Solubility  mole / L

b) The solubility of oxygen in water exposed to air at 0.89 atm = mole / L

c) Oxygen  released from 4.70 L of water in an unsealed container If=  

Concentration mole

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nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.