{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

CHAPTER 11 HOMEWORK KEY

# CHAPTER 11 HOMEWORK KEY - CHAPTER 11 HOMEWORK KEY 26 An...

This preview shows pages 1–4. Sign up to view the full content.

CHAPTER 11 HOMEWORK KEY 26. An aqueous antifreeze solution is 40.0 % ethylene glycol (C 2 H 6 O 2 ) by mass. The density of the solution is 1.05 g/cm 3 . Calculate the molality, molarity and mole fraction of the ethylene glycol. 32. Calculate the molarity and mole fraction of acetone in a 1.00 m solution of acetone (CH 3 COCH 3 ) in ethanol (C 2 H 5 OH). (Density of acetone = 0.788 g/cm 3 ; density of ethanol = 0.789 g/cm 3 .) Assume that the volumes of acetone and ethanol add.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
46. The vapor pressure of a solution containing 53.6 g glycerin (C 3 H 6 O 3 ) in 133.7 g ethanol (C 2 H 5 OH) is 113 torr at 40 o C. Calculate the vapor pressure of pure ethanol at 40 o C, assuming that glycerin is a nonvolatile, nonelectrolyte solute in ethanol. 50. A solution is prepared by mixing 0.0300 mol CH 2 Cl 2 and 0.0500 mol CH 2 Br 2 at 25 o C. Assuming the solution is ideal, calculate the composition of the vapor (in terms of mole fractions) at 25 o C. At 25 o C, the vapor pressures of pure CH 2 Cl 2 and pure CH 2 Br 2 are 133 and 11.4 torr respectively.
58. A 2.00 g sample of a large biomolecule was dissolved in 15.0 g of carbon

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 6

CHAPTER 11 HOMEWORK KEY - CHAPTER 11 HOMEWORK KEY 26 An...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online