13.75) i = osmotic pressure measured/osmotic pressure calculated.

1
13.75) i osmotic pressure measured/osmotic
pressure calculated. Osmotic pressure MRT
0.010 mol x 0.08206 L ATM x 298 K 0.24 ATM
L mol K i 0.674 ATM/
0.24 ATM 2.8 The closer i measured is to the i
calculated the more ideal the solution is. Ion
paring and other attractive forces reduce the
number of particles in solution.
13.88) ppm (parts per million) mass solute/
mass solution) x 106 KCl ? K Cl- by
moles therefore K KCl so . 260 ppm KCl
260g KCl x 39.10g K 136g
K 136 ppm
1 x 106g soln 74.55g KCl 1 x 106 g
soln
2

• 13.95
• i ?Tf (measured) / ?Tf (calculated)
• Hg(NO3)2 m 10.0 g Hg(NO3)2 x 1 mol
  Hg(NO3)2 0.0308m
• 1,00Kg H20
  324.6g Hg(NO3)2
• .
• ?Tf -1.86(0.0308) -0.0573oC (note? - assume
  non electrolyte)
• i -0.162oC 2.83
• -0.0573oC