1. Bongani is learning about reducing agents. He understands that a reducing agent causes reduction of another substance and is itself oxidized. In the reaction: CuO + H2 → Cu + H2O, which is the reducing agent?
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Chapter 7: Electrochemistry
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2. Vera is studying oxidation states. She learns that the oxidation state of fluorine is always -1 in all its compounds. What is the oxidation state of fluorine in F2?
3. In corrosion, iron acts as:
4. Vera is studying the rules for assigning oxidation states. She learns that the sum of oxidation states in a neutral compound is zero. In H2O, what is the sum of oxidation states?
5. Paula is studying the rules for assigning oxidation states. She learns that the oxidation state of oxygen is usually -2, except in peroxides where it is -1. In H2O2, what is the oxidation state of oxygen?
6. Which metal is commonly used for sacrificial protection of iron?
7. Corrosion is an undesirable process because it:
8. Which cell is responsible for corrosion?
9. Which material is commonly used as electrolyte in electroplating?
10. Oxidation occurs at the: