Respuesta :
Answer:
0.42 m
Explanation:
First, we need to know which is the Henry's law. Henry's law states the following:
"At a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid".
In summary, is the following expression:
C = k*Pi (1)
Where:
C: Solubility of the gas (m)
Pi: Partial pressure of the gas (atm)
k: constant of henry's law (in m/atm)
Now with the first data of pressure and solubility we can calculate the constant k, however, the solubility must be in mol/kg, and we have solubility in g/gH2O. Let's turn this solubility in mol, using the molar mass of N2O, which is 44 g/mol:
moles N2O = 0.121 / 44 = 0.003 moles
molality = moles /kg water
m = 0.003 / 0.1 = 0.03 moles/kg
Now that we have the solubility in m, we can calculate the constant:
k = C/Pi
k = 0.03/1 = 0.03 m/atm
With this value, we only need to apply Henry's law, with the new pressure of 1.4 atm and solve for C:
C = 0.03 * 1.4
C = 0.42 moles/kg water
Answer:
the point at which there are equal amounts of hydrogen and hydroxide ions
Explanation:
