Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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number 1 a-f pls thanks im
begging you huhuhu i hope u enjoyed thanks giving stay safe ?
second pic is the lecture notes
Transcribed Image Text:1. Determine the oxidation number of the elements in each of the following
compounds:
а. Н2СОЗ
b. N2
с. Zn(OH),?-
d. NO2
е. LiH
f. Fe:O4
Transcribed Image Text:I. Oxidation Number method
(valence - Change)
I. Half -Reactions method
(Jon- Flectron)
Fe z O3 (S)
CO
9)
Fe cs) + COz Cg)
(5)
+ COz
• Ass ign oxidation Numbers
- Assign oxidation Numbers
-6
12 -2
+4 4
+6
-6
+2 -2
+4 -4
CO (6)
Fe cs) t Casy)
CO 6)
Fe (S)
+ COz G)
:. Fe : +3
C 12
ře = 0
C: +4
:. Fe : +3
C: +2
fe : 0
C : +4
Determine the change in ON
Determine reduction /oxidation
Fe : + 3
gained
3 e
:. reduction
-3
Fe :
(per atom)
+ 3
+2
: oxidation
last
(per atom)
+ス
-- +4
+ス
+ +4
Note the change in ON
Separate into half-reactions, balance redox atoms
-3
toe
2 fe (s)
(5)
Fe z O3 (S)
CO (9)
ー Fe cs) t CO2 G)
+2
Balance the change in
Balance the e
ON
= -6
-3 x(2
Fe 2 03
+ be
(5)
2 Fe (5)
Fe 2 03 (5)
Có (9)
Fe' cs) + CO2 Cg)
+ CO2
be
O *3
+2 x3
: +6
• Apply coe fificients in equation
Get the overall reaction
+ 3 CO (g)
→ 2 Fe es) + 3 CO2 Cg)
2 Feen t 3 COz egs + be
ャ
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