Name: ______________________________ period: _______
Ch. 7 & 14 IMF & chemical equations test [69 points] honors Chem
To conserve school resources (i.e. use of photocopier & paper), you will supply your own paper. Start each problem on a new side of the paper; otherwise, you might lose points. Attach this sheet to your answers.
Academic Honesty: The answers on this test are my own and I am using only the allowed set of notes as described in the syllabus. I have not discussed the test questions with anyone before or during the test nor have I seen the test questions prior to the exam. If you violate any of the preceding items or do not sign, your semester grade is a F.
Signature: ___________________
1. Using the lowest ratio of integers, balance the following chemical equations; use “1” as appropriate. [29 points; # points shown in brackets]
a. fluorine gas reacts with aluminum oxide to form aluminum fluoride and oxygen gas. [8]
b. burning ethane (C2H6) in air (i.e. oxygen gas) produces carbon dioxide and water [7]
c. ___ NH3 + ___ O2 à ___ NO + ___ H2O [4]
d. ___ CH3OH + ___ O2 à ___ CO2 + ___ H2O [4]
e. ___ K3PO4 + ___ CaCl2 à ___ calcium phosphate + ___ potassium chloride [6]
2. What is the relative boiling points of C2H5, CH4, and C5H12 ? Justify your response. [15 points]
3. What is the relative vapor pressure of CH3OCH3 versus CH3CH2OH ? Rationalize your response. [10 points]
H H H H
| .. | | | ..
H – C – O – C – H H – C – C – O – H
| ¨ | | | ¨
H H H H
4. Identify the IMF in __; include the basis of your answer. [15 points]
a. C2H5
b. CH3OH (see # 3 for its Lewis structure)
c. CH3CH2OH (see # 3 for its Lewis structure)