Week 4.docx - Written Assignment 4: Chemical Reactions...

Written Assignment 4: Chemical Reactions
Answer all assigned questions and problems, and show all work.
1. Write the (a) balanced equation for the formation of liquid water from hydrogen and
oxygen gas, and use it to explain the following terms: (b) chemical reaction, (c)
reactant, (d) product. (12 points)
2. Balance the following equations: (18 points)
a. C + O
2
→ CO
 2C+02=2CO
b. CO + O
2
→ CO
 2CO+O2=2CO2
c. Na + H
2
O → H
2
+ NaOH
2
2
4
4
O
3. Calculate the mass in grams of iodine (I
2
) that will react completely with 20.4 g of
aluminum (Al) to form aluminum iodide (AlI
3
). (5 points)
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 1.13*254 = 287 grams
(Reference: Chang 3.47)