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Ch 8 PP w o solutions.pdf
Ch_8_PP_w_o_solutions.pdf
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Ch 8 PP w o solutions.pdf-Chem 161-2014 Some Tro C...
Ch_8_PP_w_o_solutions.pdf-Chem 161-2014 Some Tro Chapter 8
Ch 8 PP w o solutions.pdf-Chem 161-...
Ch_8_PP_w_o_solutions.pdf-Chem 161-2014 Some Tro Chapter 8
Page 21
21
3
Chem 161-2007 Exam II
Hill, Petrucci et al., 4
th
edition
Chapter 3B - Stoichiometry
Limit. reactants & % yield
Consider the reaction:
4Al + 3O
2
→
2Al
2
O
3
If 3.0 mol of Al are mixed with 3.0 mol of O
2
and the reaction produces 1.0 mol of Al
2
O
3
, what
is the percent yield of this reaction?
A.
75%
B.
90%
C.
67%
D.
33%
E.
50%
Page 22
22
•
GROUP 1A ELEMENTS
26
Chem 161-2012 Final Exam
Burdge and Overby Chapter 8 – Chemical Reactions
Periodic trends in reactivity of the main group elements (Corrleates to H&P, Chapters 20,21,22)
Which one of the following elements will react with water to release hydrogen gas?
2.
A. Al
B. Na
C. Fe
D. Au
E.
Ag
Chem 162-2003 Final exam + answers
Chapter 19-Groups 1A through 4A
Group 1A Elements
39.
Which of the following are produced when alkali metals react with water?
X.
H
2
Y.
M
+
Z.
OH
-
W.
O
2
A.
X, Y and Z
B.
Y, Z and W
C.
X and Y
D.
Y and Z
E.
X, Y and W
Page 23
23
28.
Chem 162-2005 Final Exam + Answers
Chapter 19 - Groups IA through 4A
Group IA Elements
What are the expected products of the following reaction?
Na(s) + H
2
O(l)
→
?
(not balanced)
A.
Na
+
(aq) + OH
-
(aq) + H
2
O(l)
B.
Na
+
(aq) + OH
-
(aq) + H
2
(g)
C.
NaH (aq) + O
2
(g)
D.
Na
+
(aq) + O
2-
(aq) + H
2
(g)
E.
Na(H
2
O)
2
+
(aq)
•
GROUP 7A ELEMENTS
No exam problems available.
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