apchemsolnprac0809

apchemsolnprac0809 - AP Chemistry – Solutions...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: AP Chemistry – Solutions apchemsolnprac0809.doc Name: _________________________________ Date: ______________________ Period: _____ 1. An aqueous solution of ethanol, C 2 H 5 OH, that is 12.0% ethanol by weight, has a density of 0.981g/mL at 20.0 o C. The molecular mass of C 2 H 5 OH is 46.0g/mol. What is the molality of ethanol in this solution? 2. What is the mole fraction of water in the water-ethanol solution given in question 1 above? 3. What is a colligative property? Name the four colligative properties studied in this chapter. 4. Which one of the following does NOT affect the solubility of a gas in solvents? a. identity of the gas b. identity of the solvent c. pressure of the gas d. temperature e. atmospheric pressure 5. An ideal solution is formed from a mixture of the nonvolatile solute, urea (CO(NH 2 ) 2 ), and methanol (CH 3 OH). The vapor pressure of pure methanol at 20.0 o C is 89.0mmHg a. Calculate the mole fraction of urea that is obtained from mixing 6.0g of urea with 32.0g of a....
View Full Document

This note was uploaded on 12/07/2011 for the course CHEM 100 taught by Professor Feebeck during the Fall '10 term at Purdue.

Page1 / 2

apchemsolnprac0809 - AP Chemistry – Solutions...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online