SCH4U Quiz 5 .Electro chem summer

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SCH4U QUIZ 5 Electro Chemistry Student’s Name : Date: Knowledge / Understanding Thinking/Inquiry Communication Application Marks 5 6 4 5 20 Identify the letter of the choice that best completes the statement 1. The process in which substance gains electrons is called a. oxidation b. hydrogenation c. sublimation d. reduction 2. Which of the following best describes the term electrochemistry? a. the study of processes involved in converting chemical energy to electrical energy b. the study of processes involved in converting electrical energy to chemical energy c. the study of chemically generated electricity d. two of the above statements are correct 3. Elements whose oxidation number is increased are a. reduced b. hydrogenation c. oxidised d. none of these 4. An electrochemical cell is also called a. battery b. galvanic cell c. cell d. chargeable cell Page 1 of 3
SCH4U QUIZ 5 Electro Chemistry 5. Which of the following is the strongest oxidising agent? a. hydrogen b. oxygen c. fluorine d. bromine 6. Calculate the oxidation number of the element (Bold symbol) in the given compound. ( I=4) i. H 2 S O 4 ii Mn O 4 — iii. K 2 Cr 2 O 7 iv. S 8 . 7. Indicate whether each statement is True or False: ( T/I=2) i. Redox reactions can be balanced using the oxidation number method or the net ionic equation method. ii. In a redox table the strongest reducing agent is located on the bottom right side of the table. 8. Explain the importance of Chlor- alkali process?( Comm.4) Page 2 of 3
SCH4U QUIZ 5 Electro Chemistry 9. a. Write an empirical description of each of the following terms: i. Galvanic cell ii. Half cell iii. porous boundary iv. Inert electrode b. What are the characteristics of solution in salt bridge? ( App 4+1=5) Page 3 of 3
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