1. http://www.chemguide.co.uk/physical/phaseeqia/nonideal.html
2. C = KpP
Plug in K and P and solve for C in M. Then M = mols/L and solve for mols.l Then mols = g/molar mass and solve for grams.
3. Ideal values.
a = 2
b = 3
c
1
d = 2. d is the only one HIGHER than the ideal.
1. Van't Hoff factors depend on the concentrations of the dissolved solute species. Why would a dilute solution have a Van't Hoff factor closer to the ideal value?
a. because in dilute solutions solute species are less likely to bump into each other and pair up.
b. because in dilute solutions solute species are more likely to bump into each other and pair up.
c. because in dilute solutions, the average kinetic energies of solute species is greater therefore making solute collisions less effective.
d. because in dilute solutions there are more holes for solute species to hide in.
2. How many milligrams of nitrogen gas are dissolved in 4.00 liters of water under atmospheric conditions? Assume that the air above the water contains nitrogen with a partial pressure of 0.78 atm. (N2: KH = 6.1 x 10-4 M/atm)
a. 17.1 mg N2
b. 13.3 mg N2
c. 68.3 mg N2
d. 53.3 mg N2
3. Which of the following Van't Hoff factors is incorrect?
a. NaCl: i = 1.87
b. K2CO3: i = 2.45
c. C12H22O11: i = 1.00
d. HCl: i = 2.1
Thank you.
1 answer