Oxidation-Reduction Reaction Lab Report

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INTRODUCTION
I chose redox reactions as the topic for my module because this was the hardest concept for me this third quarter. Even though most of the topics for this quarter was hard, I really wanted to know more about Oxidation-Reduction Reaction (Redox Rn). When Ma’am Canceran was discussing about this topic, I understand it correctly on how it works, but later on when we were having some activities and exercises, some confusions came into the way. I know that this module will help us understand more about he topics that is hard for us.

In Oxidation-Reduction Reaction (Redox Rn), the things that you need to keep in mind are the proper assignment of oxidation numbers, the concept of oxidizing and reducing agent, the net ionic equation,
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We may not know it now, but later on we will realize that this kind of task is a big help for us to improve our knowledge about the topic that is difficult for us. This is also one way to help us like Chemistry better and appreciate the subject more.

We will be able to discuss Oxidation-Reduction Reaction (Redox Rxn) in this learning module with the help of our notes in the class, chemistry related websites and of course, our own learnings. The general principles regarding Redox reaction were shown as it goes to more detailed information. We will be able to learn the step-by-step procedure with examples included.

It is necessary to study about this topic since we encounter these processes in our daily lives. This includes the reaction between chemicals like the burning of fuels and such. The topic, Oxidation-Reduction Reaction, is very essential in our lives that’s why learning this topic and applying it everyday will be a great help for
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Which of the following represents a redox reaction?
A. 2HCl + Na2SO3 2NaCl + H2O + SO2
B. CuS + H2  H2S + Cu
C. AgNO3 + NaCl  AgCl + NaNO3
D. H2CO3  H2O + CO2
6. Balance the following oxidation-reduction equation: Sn2+(aq) + Ce4+(aq)  Sn4+(aq) + Ce3+(aq)
A. Sn2+(aq) + 2Ce4+(aq)  Sn4+(aq) + 2Ce3+(aq)
B. Sn2+(aq) + 3Ce4+(aq)  Sn4+(aq) + 3Ce3+(aq)
C. 2Sn2+(aq) + Ce4+(aq)  2Sn4+(aq) + Ce3+(aq)
D. 2Sn2+(aq) + 3Ce4+(aq)  2Sn4+(aq) + 3Ce3+(aq)
7. In the reaction of Sn2+ with ClO3- to form Cl- and Sn4+ in acid solution, what is the change in the oxidation number of Cl?
A. a decrease of 2
B. a decrease of 4
C. a decrease of 6
D. an increase of 2
8. Assign oxidation number to all the elements in PbSO4.
A. Pb = +2; S = +4; O = -2
B. Pb = +2; S = +6; O = -2
C. Pb = +4; S = +4; O = -2
D. Pb = +4; S = +6; O = -2
9. In the chemical reaction below, determine the reducing agent.
Cl2(aq) + 2NaBr(aq)  2NaCl(aq) + Br2(aq)
A. Cl2
B. NaCl
C. Br-
D. NaBr
10. An element that is oxidized is a(n) __________ agent and an element that is reduced is a(n) __________ agent.
A. reducing; oxidizing
B. reducing; reducing
C. oxidizing; reducing
D. oxidizing; oxidizing
Answer Key:
1. D
2. A
3. B
4. C
5. B
6. A
7. C
8. B
9. D
10.

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