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Chapter 7: Electrochemistry

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1

Which statement best describes a redox reaction?

2

Rania is studying cathodic protection. She learns that cathodic protection involves making the metal the cathode to prevent corrosion. Which of the following uses cathodic protection?

3

Laura is studying the prevention of corrosion. She learns that painting is a common method. Which of the following is an advantage of using paint for corrosion prevention?

4

Which metal is commonly used for sacrificial protection of iron?

5

Tina is learning about redox reactions in photography. She understands that the developer reduces silver halide to silver. What is the role of the developer in the photographic process?

6

Which species acts as a reducing agent in Zn + Cu2+ → Zn2+ + Cu?

7

Nadia is studying the formula of ionic compounds. She knows that the formula must be neutral. What is the formula of the ionic compound formed between magnesium (Mg2+) and chloride (Cl-)?

8

Waleed is determining the oxidation number of an atom in a compound. He wants to find the oxidation state of chromium in K2Cr2O7. Given K is +1 and O is -2, what is the oxidation state of Cr?

9

A voltaic cell is also known as:

10

Yara is studying corrosion prevention methods. She learns that coating with paint is a simple and effective method. Which of the following is an advantage of painting to prevent corrosion?

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